# HG changeset patch
# User Nicholas Jillings <nicholas.jillings@mail.bcu.ac.uk>
# Date 1543413111 0
# Node ID a8455b0766cd8819bc2d9d96be83f1af3a0e5e71
# Parent  aa4503f8c630f5657fafdbb217575a8686cf7e8f# Parent  cb227441a102289e904ef10b66092792f6b4b305
Merge branch 'hot_fix' into vnext

diff -r cb227441a102 -r a8455b0766cd .brackets.json
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.brackets.json	Wed Nov 28 13:51:51 2018 +0000
@@ -0,0 +1,12 @@
+{
+    "brackets-minifier.on-save-project": false,
+    "brackets-minifier.js-project-minify": true,
+    "brackets-minifier.css-project-minify": true,
+    "brackets-minifier.js-custom-path": "",
+    "brackets-minifier.css-custom-path": "",
+    "brackets-minifier.project-exclude": "",
+    "brackets-minifier.concat-js-filename": "",
+    "brackets-minifier.concat-css-filename": "",
+    "brackets-minifier.uglifyjs-options": "{}",
+    "brackets-minifier.cleancss-options": "{}"
+}
\ No newline at end of file
diff -r cb227441a102 -r a8455b0766cd .gitignore
--- a/.gitignore	Wed Nov 28 13:50:22 2018 +0000
+++ b/.gitignore	Wed Nov 28 13:51:51 2018 +0000
@@ -11,3 +11,6 @@
 *.DS_STORE
 *.swp
 *.swo
+saves/ratings/*
+saves/timelines/*
+saves/timelines_movement/*
diff -r cb227441a102 -r a8455b0766cd css/bootstrap.min.css
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/css/bootstrap.min.css	Wed Nov 28 13:51:51 2018 +0000
@@ -0,0 +1,6 @@
+/*!
+ * Bootstrap v3.3.7 (http://getbootstrap.com)
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ *//*! normalize.css v3.0.3 | MIT License | github.com/necolas/normalize.css */html{font-family:sans-serif;-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%}body{margin:0}article,aside,details,figcaption,figure,footer,header,hgroup,main,menu,nav,section,summary{display:block}audio,canvas,progress,video{display:inline-block;vertical-align:baseline}audio:not([controls]){display:none;height:0}[hidden],template{display:none}a{background-color:transparent}a:active,a:hover{outline:0}abbr[title]{border-bottom:1px dotted}b,strong{font-weight:700}dfn{font-style:italic}h1{margin:.67em 0;font-size:2em}mark{color:#000;background:#ff0}small{font-size:80%}sub,sup{position:relative;font-size:75%;line-height:0;vertical-align:baseline}sup{top:-.5em}sub{bottom:-.25em}img{border:0}svg:not(:root){overflow:hidden}figure{margin:1em 40px}hr{height:0;-webkit-box-sizing:content-box;-moz-box-sizing:content-box;box-sizing:content-box}pre{overflow:auto}code,kbd,pre,samp{font-family:monospace,monospace;font-size:1em}button,input,optgroup,select,textarea{margin:0;font:inherit;color:inherit}button{overflow:visible}button,select{text-transform:none}button,html input[type=button],input[type=reset],input[type=submit]{-webkit-appearance:button;cursor:pointer}button[disabled],html input[disabled]{cursor:default}button::-moz-focus-inner,input::-moz-focus-inner{padding:0;border:0}input{line-height:normal}input[type=checkbox],input[type=radio]{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;padding:0}input[type=number]::-webkit-inner-spin-button,input[type=number]::-webkit-outer-spin-button{height:auto}input[type=search]{-webkit-box-sizing:content-box;-moz-box-sizing:content-box;box-sizing:content-box;-webkit-appearance:textfield}input[type=search]::-webkit-search-cancel-button,input[type=search]::-webkit-search-decoration{-webkit-appearance:none}fieldset{padding:.35em .625em .75em;margin:0 2px;border:1px solid silver}legend{padding:0;border:0}textarea{overflow:auto}optgroup{font-weight:700}table{border-spacing:0;border-collapse:collapse}td,th{padding:0}/*! 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+/*# sourceMappingURL=bootstrap.min.css.map */
\ No newline at end of file
diff -r cb227441a102 -r a8455b0766cd css/core.css
--- a/css/core.css	Wed Nov 28 13:50:22 2018 +0000
+++ b/css/core.css	Wed Nov 28 13:51:51 2018 +0000
@@ -199,6 +199,7 @@
 div.master-volume-holder-inline {
     width: 100%;
     padding: 5px;
+    float: left;
 }
 div.master-volume-holder-float {
     position: absolute;
@@ -239,7 +240,7 @@
     height: auto;
 }
 div.calibration-slider {
-    width: 50px;
+    width: 44px;
     margin: 2px;
     text-align: center;
     align-content: center;
@@ -252,7 +253,15 @@
     /* WebKit */
     width: 8px;
     padding: 0 5px;
-    height: 290px;
+    height: 200px;
+}
+button.calibration-button {
+    height: 25px;
+    border-radius: 5px;
+    border: #444;
+    border-width: 1px;
+    border-style: solid;
+    background-color: white;
 }
 
 /*  Comment Boxes */
diff -r cb227441a102 -r a8455b0766cd index.html
--- a/index.html	Wed Nov 28 13:50:22 2018 +0000
+++ b/index.html	Wed Nov 28 13:51:51 2018 +0000
@@ -24,7 +24,7 @@
 
 <body>
     <div id='topLevelBody'>
-        <h1><a target="_blank" href="https://github.com/BrechtDeMan/WebAudioEvaluationTool">Web Audio Evaluation Toolbox (v1.2.2)</a></h1>
+        <h1><a target="_blank" href="https://github.com/BrechtDeMan/WebAudioEvaluationTool">Web Audio Evaluation Toolbox (v1.2.3)</a></h1>
         <h2>Start menu </h2>
         <ul>
             <li><a href="test.html?url=tests/examples/AB_example.xml" target="_blank">AB interface test example</a></li>
@@ -54,7 +54,7 @@
         <button id="popup-previous" class="popupButton">Back</button>
     </div>
     <div class="testHalt" style="visibility: hidden"></div>
-    <div id="footer"><a target="_blank" href="https://github.com/BrechtDeMan/WebAudioEvaluationTool">Web Audio Evaluation Toolbox (v1.2.2)</a></div>
+    <div id="footer"><a target="_blank" href="https://github.com/BrechtDeMan/WebAudioEvaluationTool">Web Audio Evaluation Toolbox (v1.2.3)</a></div>
 </body>
 
 </html>
diff -r cb227441a102 -r a8455b0766cd interfaces/AB.css
--- a/interfaces/AB.css	Wed Nov 28 13:50:22 2018 +0000
+++ b/interfaces/AB.css	Wed Nov 28 13:51:51 2018 +0000
@@ -24,6 +24,10 @@
     height: 40px;
     font-size: 1.2em;
 }
+div#submit-holder {
+    width: 100%;
+    text-align: center;
+}
 div.interface-buttons {
     height: 40px;
 }
diff -r cb227441a102 -r a8455b0766cd interfaces/AB.js
--- a/interfaces/AB.js	Wed Nov 28 13:50:22 2018 +0000
+++ b/interfaces/AB.js	Wed Nov 28 13:51:51 2018 +0000
@@ -75,13 +75,14 @@
     var boxes = document.createElement('div');
     boxes.id = "box-holders";
 
+    var submitHolder = document.createElement("div");
+    submitHolder.id = "submit-holder";
     var submit = document.createElement('button');
     submit.id = "submit";
     submit.onclick = buttonSubmitClick;
     submit.className = "big-button";
-    submit.textContent = "submit";
-    submit.style.position = "relative";
-    submit.style.left = (window.innerWidth - 250) / 2 + 'px';
+    submit.textContent = "Submit";
+    submitHolder.appendChild(submit);
 
     feedbackHolder.appendChild(boxes);
 
@@ -95,7 +96,7 @@
     testContent.appendChild(interfaceButtons);
     testContent.appendChild(outsideRef);
     testContent.appendChild(feedbackHolder);
-    testContent.appendChild(submit);
+    testContent.appendChild(submitHolder);
     testContent.appendChild(comments);
     interfaceContext.insertPoint.appendChild(testContent);
 
@@ -395,10 +396,13 @@
 function buttonSubmitClick() {
     var checks = testState.currentStateMap.interfaces[0].options,
         canContinue = true;
-    
+
     if (interfaceContext.checkFragmentMinPlays() === false) {
-    return;
-}
+        return;
+    }
+    if (interfaceContext.checkCommentQuestions() === false) {
+        return;
+    }
 
     for (var i = 0; i < checks.length; i++) {
         if (checks[i].type == 'check') {
diff -r cb227441a102 -r a8455b0766cd interfaces/ABX.css
--- a/interfaces/ABX.css	Wed Nov 28 13:50:22 2018 +0000
+++ b/interfaces/ABX.css	Wed Nov 28 13:51:51 2018 +0000
@@ -20,9 +20,12 @@
     height: 40px;
     font-size: 1.2em;
 }
+div#submit-holder {
+    width: 100%;
+    text-align: center;
+}
 div#box-holders {
     width: 100%;
-    text-align: center;
 }
 div#playback-holder {
     float: none;
diff -r cb227441a102 -r a8455b0766cd interfaces/ABX.js
--- a/interfaces/ABX.js	Wed Nov 28 13:50:22 2018 +0000
+++ b/interfaces/ABX.js	Wed Nov 28 13:51:51 2018 +0000
@@ -77,15 +77,15 @@
     var boxes = document.createElement('div');
     boxes.align = "center";
     boxes.id = "box-holders";
-    boxes.style.float = "left";
 
+    var submitHolder = document.createElement("div");
+    submitHolder.id = "submit-holder";
     var submit = document.createElement('button');
     submit.id = "submit";
     submit.onclick = buttonSubmitClick;
     submit.className = "big-button";
     submit.textContent = "submit";
-    submit.style.position = "relative";
-    submit.style.left = (window.innerWidth - 250) / 2 + 'px';
+    submitHolder.appendChild(submit);
 
     feedbackHolder.appendChild(boxes);
 
@@ -98,7 +98,7 @@
     testContent.appendChild(pagetitle);
     testContent.appendChild(interfaceButtons);
     testContent.appendChild(feedbackHolder);
-    testContent.appendChild(submit);
+    testContent.appendChild(submitHolder);
     testContent.appendChild(comments);
     interfaceContext.insertPoint.appendChild(testContent);
 
@@ -424,9 +424,6 @@
         boxW = numObj * 312;
         diff = window.innerWidth - boxW;
     }
-    document.getElementById('box-holders').style.marginLeft = diff / 2 + 'px';
-    document.getElementById('box-holders').style.marginRight = diff / 2 + 'px';
-    document.getElementById('box-holders').style.width = boxW + 'px';
 }
 
 function buttonSubmitClick() {
@@ -436,6 +433,9 @@
     if (interfaceContext.checkFragmentMinPlays() === false) {
         return;
     }
+    if (interfaceContext.checkCommentQuestions() === false) {
+        return;
+    }
 
     for (var i = 0; i < checks.length; i++) {
         var checkState = true;
diff -r cb227441a102 -r a8455b0766cd interfaces/ape.css
--- a/interfaces/ape.css	Wed Nov 28 13:50:22 2018 +0000
+++ b/interfaces/ape.css	Wed Nov 28 13:51:51 2018 +0000
@@ -26,7 +26,6 @@
 }
 div.slider {
     /* Specify any structure for the slider holder interface */
-    background-color: #eee;
     height: 150px;
     margin: 5px 50px;
     -moz-user-select: -moz-none;
@@ -61,6 +60,12 @@
     -webkit-user-select: none;
     border: 1px solid black;
 }
+canvas.tick-canvas {
+    z-index: -1;
+    position: absolute;
+    height: 150px;
+    background-color: #eee;
+}
 div#outside-reference-holder {
     display: flex;
     align-content: center;
diff -r cb227441a102 -r a8455b0766cd interfaces/ape.js
--- a/interfaces/ape.js	Wed Nov 28 13:50:22 2018 +0000
+++ b/interfaces/ape.js	Wed Nov 28 13:51:51 2018 +0000
@@ -4,7 +4,7 @@
  */
 
 /*globals window,interfaceContext, document, audioEngineContext, console, $, Interface, testState, storage, specification */
-/*globals metricTracker */
+/*globals metricTracker, module, randomiseOrder */
 // Once this is loaded and parsed, begin execution
 loadInterface();
 
@@ -21,136 +21,15 @@
     testContent.id = 'testContent';
 
     // Bindings for interfaceContext
-    interfaceContext.checkAllPlayed = function () {
-        var hasBeenPlayed = audioEngineContext.checkAllPlayed();
-        if (hasBeenPlayed.length > 0) // if a fragment has not been played yet
-        {
-            var str = "";
-            if (hasBeenPlayed.length > 1) {
-                for (var i = 0; i < hasBeenPlayed.length; i++) {
-                    var ao_id = audioEngineContext.audioObjects[hasBeenPlayed[i]].interfaceDOM.getPresentedId();
-                    str = str + ao_id; // start from 1
-                    if (i < hasBeenPlayed.length - 2) {
-                        str += ", ";
-                    } else if (i == hasBeenPlayed.length - 2) {
-                        str += " or ";
-                    }
-                }
-                str = 'You have not played fragments ' + str + ' yet. Please listen, rate and comment all samples before submitting.';
-            } else {
-                str = 'You have not played fragment ' + (audioEngineContext.audioObjects[hasBeenPlayed[0]].interfaceDOM.getPresentedId()) + ' yet. Please listen, rate and comment all samples before submitting.';
-            }
-            this.storeErrorNode(str);
-            interfaceContext.lightbox.post("Message", str);
-            return false;
-        }
-        return true;
-    };
 
     interfaceContext.checkAllMoved = function () {
-        var state = true;
-        var str = 'You have not moved the following sliders. ';
-        for (var i = 0; i < this.interfaceSliders.length; i++) {
-            var interfaceTID = [];
-            for (var j = 0; j < this.interfaceSliders[i].metrics.length; j++) {
-                var ao_id = this.interfaceSliders[i].sliders[j].getAttribute("trackIndex");
-                if (this.interfaceSliders[i].metrics[j].wasMoved === false && audioEngineContext.audioObjects[ao_id].interfaceDOM.canMove()) {
-                    state = false;
-                    interfaceTID.push(j);
-                }
-            }
-            if (interfaceTID.length !== 0) {
-                var interfaceName = this.interfaceSliders[i].interfaceObject.title;
-                if (interfaceName === undefined) {
-                    str += 'On axis ' + String(i + 1) + ' you must move ';
-                } else {
-                    str += 'On axis "' + interfaceName + '" you must move ';
-                }
-                if (interfaceTID.length == 1) {
-                    str += 'slider ' + (audioEngineContext.audioObjects[interfaceTID[0]].interfaceDOM.getPresentedId()) + '. '; // start from 1
-                } else {
-                    str += 'sliders ';
-                    for (var k = 0; k < interfaceTID.length - 1; k++) {
-                        str += (audioEngineContext.audioObjects[interfaceTID[k]].interfaceDOM.getPresentedId()) + ', '; // start from 1
-                    }
-                    str += (audioEngineContext.audioObjects[interfaceTID[interfaceTID.length - 1]].interfaceDOM.getPresentedId()) + '. ';
-                }
-            }
-        }
-        if (state !== true) {
-            this.storeErrorNode(str);
-            interfaceContext.lightbox.post("Message", str);
-            console.log(str);
-        }
-        return state;
+        return module.checkAllMoved();
     };
 
     interfaceContext.checkScaleRange = function () {
-        var audioObjs = audioEngineContext.audioObjects;
-        var audioHolder = testState.stateMap[testState.stateIndex];
-        var interfaceObject = this.interfaceSliders[0].interfaceObject;
-        var state = true;
-        var str = '';
-        this.interfaceSliders.forEach(function (sliderHolder, i) {
-            var scales = (function () {
-                var scaleRange = interfaceObject.options.find(function (a) {
-                    return a.name == "scalerange";
-                });
-                return {
-                    min: scaleRange.min,
-                    max: scaleRange.max
-                };
-            })();
-            var range = sliderHolder.sliders.reduce(function (a, b) {
-                var v = convSliderPosToRate(b) * 100.0;
-                return {
-                    min: Math.min(a.min, v),
-                    max: Math.max(a.max, v)
-                };
-            }, {
-                min: 100,
-                max: 0
-            });
-            if (range.min >= scales.min || range.max <= scales.max) {
-                state = false;
-                str += 'On axis "' + sliderHolder.interfaceObject.title + '" you have not used the full width of the scale. ';
-            }
-        });
-        if (state !== true) {
-            this.storeErrorNode(str);
-            interfaceContext.lightbox.post("Message", str);
-            console.log(str);
-        }
-        return state;
+        return module.checkScaleRange();
     };
 
-    Interface.prototype.objectSelected = null;
-    Interface.prototype.objectMoved = false;
-    Interface.prototype.selectObject = function (object) {
-        if (this.objectSelected === null) {
-            this.objectSelected = object;
-            this.objectMoved = false;
-        }
-    };
-    Interface.prototype.moveObject = function () {
-        if (this.objectMoved === false) {
-            this.objectMoved = true;
-        }
-    };
-    Interface.prototype.releaseObject = function () {
-        this.objectSelected = null;
-        this.objectMoved = false;
-    };
-    Interface.prototype.getSelectedObject = function () {
-        return this.objectSelected;
-    };
-    Interface.prototype.hasSelectedObjectMoved = function () {
-        return this.objectMoved;
-    };
-
-    // Bindings for slider interfaces
-    Interface.prototype.interfaceSliders = [];
-
     // Bindings for audioObjects
 
     // Create the top div for the Title element
@@ -220,12 +99,13 @@
     interfaceContext.insertPoint.appendChild(testContent);
 
     // Load the full interface
+    window.module = new ape();
     testState.initialise();
     testState.advanceState();
-
 }
 
 function loadTest(audioHolderObject) {
+    module.clear();
     var width = window.innerWidth;
     var height = window.innerHeight;
     var id = audioHolderObject.id;
@@ -246,15 +126,10 @@
         document.getElementById("test-title").textContent = audioHolderObject.title;
     }
 
-
     // Delete outside reference
     document.getElementById("outside-reference-holder").innerHTML = "";
 
     var interfaceObj = interfaceContext.getCombinedInterfaces(audioHolderObject);
-    interfaceObj.forEach(function (interfaceObjectInstance) {
-        // Create the div box to center align
-        interfaceContext.interfaceSliders.push(new interfaceSliderHolder(interfaceObjectInstance, audioHolderObject));
-    });
     interfaceObj.forEach(function (interface) {
         interface.options.forEach(function (option) {
             if (option.type == "show") {
@@ -298,113 +173,7 @@
 
     var loopPlayback = audioHolderObject.loop;
 
-    var currentTestHolder = document.createElement('audioHolder');
-    currentTestHolder.id = audioHolderObject.id;
-    currentTestHolder.repeatCount = audioHolderObject.repeatCount;
-
-    // Find all the audioElements from the audioHolder
-    $(audioHolderObject.audioElements).each(function (index, element) {
-        // Find URL of track
-        // In this jQuery loop, variable 'this' holds the current audioElement.
-        var audioObject = audioEngineContext.newTrack(element);
-        // Check if an outside reference
-        if (element.type == 'outside-reference') {
-            // Construct outside reference;
-            var orNode = new outsideReferenceDOM(audioObject, index, document.getElementById("outside-reference-holder"));
-            audioObject.bindInterface(orNode);
-        } else {
-            // Create a slider per track
-            var sliderNode = new sliderObject(audioObject, interfaceObj, index);
-            audioObject.bindInterface(sliderNode);
-            interfaceContext.commentBoxes.createCommentBox(audioObject);
-        }
-    });
-
-    // Initialse the interfaceSlider object metrics
-
-    $('.track-slider').mousedown(function (event) {
-        interfaceContext.selectObject($(this)[0]);
-    });
-    $('.track-slider').on('touchstart', null, function (event) {
-        interfaceContext.selectObject($(this)[0]);
-    });
-
-    $('.track-slider').mousemove(function (event) {
-        event.preventDefault();
-    });
-
-    $('.slider').mousemove(function (event) {
-        event.preventDefault();
-        var obj = interfaceContext.getSelectedObject();
-        if (obj === null) {
-            return;
-        }
-        var move = event.clientX - 6;
-        var w = $(event.currentTarget).width();
-        move = Math.max(50, move);
-        move = Math.min(w + 50, move);
-        $(obj).css("left", move + "px");
-        interfaceContext.moveObject();
-    });
-
-    $('.slider').on('touchmove', null, function (event) {
-        event.preventDefault();
-        var obj = interfaceContext.getSelectedObject();
-        if (obj === null) {
-            return;
-        }
-        var move = event.originalEvent.targetTouches[0].clientX - 6;
-        var w = $(event.currentTarget).width();
-        move = Math.max(50, move);
-        move = Math.min(w + 50, move);
-        $(obj).css("left", move + "px");
-        interfaceContext.moveObject();
-    });
-
-    $(document).mouseup(function (event) {
-        event.preventDefault();
-        var obj = interfaceContext.getSelectedObject();
-        if (obj === null) {
-            return;
-        }
-        var interfaceID = obj.parentElement.getAttribute("interfaceid");
-        var trackID = obj.getAttribute("trackindex");
-        var id;
-        if (interfaceContext.hasSelectedObjectMoved() === true) {
-            var l = $(obj).css("left");
-            id = obj.getAttribute('trackIndex');
-            var time = audioEngineContext.timer.getTestTime();
-            var rate = convSliderPosToRate(obj);
-            audioEngineContext.audioObjects[id].metric.moved(time, rate);
-            interfaceContext.interfaceSliders[interfaceID].metrics[trackID].moved(time, rate);
-            console.log("slider " + id + " moved to " + rate + ' (' + time + ')');
-            obj.setAttribute("slider-value", convSliderPosToRate(obj));
-        } else {
-            id = Number(obj.attributes.trackIndex.value);
-            //audioEngineContext.metric.sliderPlayed(id);
-            audioEngineContext.play(id);
-        }
-        interfaceContext.releaseObject();
-    });
-
-    $('.slider').on('touchend', null, function (event) {
-        var obj = interfaceContext.getSelectedObject();
-        if (obj === null) {
-            return;
-        }
-        var interfaceID = obj.parentElement.getAttribute("interfaceid");
-        var trackID = obj.getAttribute("trackindex");
-        if (interfaceContext.hasSelectedObjectMoved() === true) {
-            var l = $(obj).css("left");
-            var id = obj.getAttribute('trackIndex');
-            var time = audioEngineContext.timer.getTestTime();
-            var rate = convSliderPosToRate(obj);
-            audioEngineContext.audioObjects[id].metric.moved(time, rate);
-            interfaceContext.interfaceSliders[interfaceID].metrics[trackID].moved(time, rate);
-            console.log("slider " + id + " moved to " + rate + ' (' + time + ')');
-        }
-        interfaceContext.releaseObject();
-    });
+    module.initialisePage(audioHolderObject);
 
     var interfaceList = audioHolderObject.interfaces.concat(specification.interfaces);
     for (var k = 0; k < interfaceList.length; k++) {
@@ -445,238 +214,561 @@
     });
 
     //testWaitIndicator();
+    module.resize();
 }
 
-function interfaceSliderHolder(interfaceObject, page) {
-    this.sliders = [];
-    this.metrics = [];
-    this.id = document.getElementsByClassName("sliderCanvasDiv").length;
-    this.name = interfaceObject.name;
-    this.interfaceObject = interfaceObject;
-    this.sliderDOM = document.createElement('div');
-    this.sliderDOM.className = 'sliderCanvasDiv';
-    this.sliderDOM.id = 'sliderCanvasHolder-' + this.id;
-    this.imageHolder = (function () {
-        var imageController = {};
-        imageController.root = document.createElement("div");
-        imageController.root.className = "imageController";
-        imageController.img = document.createElement("img");
-        imageController.root.appendChild(imageController.img);
-        imageController.setImage = function (src) {
-            imageController.img.src = "";
-            if (typeof src !== "string" || src.length === undefined) {
+function ape() {
+    var axis = [];
+    var DOMRoot = document.getElementById("slider-holder");
+    var AOIs = [];
+    var page;
+
+    function audioObjectInterface(audioObject, parent) {
+        // The audioObject communicates with this object
+        var playing = false;
+        var sliders = [];
+        this.enable = function () {
+            sliders.forEach(function (s) {
+                s.enable();
+            });
+        };
+
+        this.updateLoading = function (p) {
+            sliders.forEach(function (s) {
+                s.updateLoading(p);
+            });
+        };
+
+        this.startPlayback = function () {
+            playing = true;
+            sliders.forEach(function (s) {
+                s.playing();
+            });
+        };
+
+        this.stopPlayback = function () {
+            playing = false;
+            sliders.forEach(function (s) {
+                s.stopped();
+            });
+        };
+
+        this.getValue = function () {
+            return sliders[0].value;
+        };
+
+        this.getPresentedId = function () {
+            return sliders[0].label;
+        };
+
+        this.canMove = function () {
+            return true;
+        };
+
+        this.exportXMLDOM = function (audioObject) {
+            var elements = [];
+            sliders.forEach(function (s) {
+                elements.push(s.exportXMLDOM());
+            });
+            return elements;
+        };
+
+        this.error = function () {
+            sliders.forEach(function (s) {
+                s.error();
+            });
+        };
+
+        this.addSlider = function (s) {
+            sliders.push(s);
+        };
+
+        this.clicked = function (event) {
+            if (!playing) {
+                audioEngineContext.play(audioObject.id);
+            } else {
+                audioEngineContext.stop();
+            }
+            playing = !playing;
+        };
+
+        this.pageXMLSave = function (store) {
+            var inject = audioObject.storeDOM.getElementsByTagName("metric")[0];
+            sliders.forEach(function (s) {
+                s.pageXMLSave(inject);
+            });
+        };
+
+    }
+
+    function axisObject(interfaceObject, parent) {
+
+        function sliderInterface(AOI, axisInterface) {
+            var trackObj = document.createElement('div');
+            var labelHolder = document.createElement("span");
+            var label = "";
+            var metric = new metricTracker(this);
+            var value = Math.random();
+            trackObj.align = "center";
+            trackObj.className = 'track-slider track-slider-disabled';
+            trackObj.appendChild(labelHolder);
+            axisInterface.sliderRail.appendChild(trackObj);
+            metric.initialise(this.value);
+            this.setLabel = function (s) {
+                label = s;
+            };
+            this.resize = function (event) {
+                var width = $(axisInterface.sliderRail).width();
+                var w = Number(value * width);
+                trackObj.style.left = String(w) + "px";
+            };
+            this.playing = function () {
+                trackObj.classList.add("track-slider-playing");
+            };
+            this.stopped = function () {
+                trackObj.classList.remove("track-slider-playing");
+            };
+            this.enable = function () {
+                trackObj.addEventListener("mousedown", this);
+                trackObj.addEventListener("mouseup", this);
+                trackObj.classList.remove("track-slider-disabled");
+                labelHolder.textContent = label;
+            };
+            this.updateLoading = function (progress) {
+                labelHolder.textContent = progress + "%";
+            };
+            this.exportXMLDOM = function () {
+                var node = storage.document.createElement('value');
+                node.setAttribute("interface-name", axisInterface.name);
+                node.textContent = this.value;
+                return node;
+            };
+            this.error = function () {
+                trackObj.classList.add("error-colour");
+                trackObj.removeEventListener("mousedown");
+                trackObj.removeEventListener("mouseup");
+            };
+            var timing;
+            this.handleEvent = function (e) {
+                // This is only for the mousedown / touchdown
+                if (e.preventDefault) {
+                    e.preventDefault();
+                }
+                if (e.type == "mousedown") {
+                    axisInterface.mousedown(this);
+                } else if (e.type == "mouseup" || e.type == "touchend" || e.type == "touchcancel") {
+                    axisInterface.mouseup(this);
+                    metric.moved(audioEngineContext.timer.getTestTime(), this.value);
+                    console.log("Slider " + label + " on axis " + axisInterface.name + " moved to " + this.value);
+                }
+            };
+            this.clicked = function (e) {
+                AOI.clicked();
+            };
+            this.pageXMLSave = function (inject) {
+                var nodes = metric.exportXMLDOM(inject);
+                nodes.forEach(function (elem) {
+                    var name = elem.getAttribute("name");
+                    if (name == "elementTracker" || name == "elementTrackerFull" || name == "elementInitialPosition" || name == "elementFlagMoved") {
+                        elem.setAttribute("interface-name", axisInterface.name);
+                    } else {
+                        inject.removeChild(elem);
+                    }
+                });
+            };
+            this.hasMoved = function () {
+                return metric.wasMoved;
+            };
+            Object.defineProperties(this, {
+                "DOM": {
+                    "value": trackObj
+                },
+                "value": {
+                    "get": function () {
+                        return value;
+                    },
+                    "set": function (v) {
+                        if (v >= 0 && v <= 1) {
+                            value = v;
+                        }
+                        this.resize();
+                        return value;
+                    }
+                },
+                "label": {
+                    "get": function () {
+                        return label;
+                    },
+                    "set": function () {}
+                },
+                "metric": {
+                    "value": metric
+                }
+            });
+        }
+
+        function drawTick(position) {
+            var context = tickCanvas.getContext("2d"),
+                w = tickCanvas.width,
+                h = tickCanvas.height;
+            context.beginPath();
+            context.setLineDash([1, 2]);
+            context.moveTo(position * w, 0);
+            context.lineTo(position * w, h);
+            context.closePath();
+            context.stroke();
+        }
+
+        function clearTicks() {
+            var c = tickCanvas.getContext("2d"),
+                w = tickCanvas.width,
+                h = tickCanvas.height;
+            c.clearRect(0, 0, w, h);
+        }
+
+        function createScaleMarkers(interfaceObject, root, w) {
+            var ticks = interfaceObject.options.findIndex(function (a) {
+                return (a.type == "show" && a.name == "ticks");
+            });
+            ticks = (ticks >= 0);
+            clearTicks();
+            interfaceObject.scales.forEach(function (scaleObj) {
+                var position = Number(scaleObj.position) * 0.01;
+                var pixelPosition = (position * w) + 50;
+                var scaleDOM = document.createElement('span');
+                scaleDOM.className = "ape-marker-text";
+                scaleDOM.textContent = scaleObj.text;
+                scaleDOM.setAttribute('value', position);
+                root.appendChild(scaleDOM);
+                scaleDOM.style.left = Math.floor((pixelPosition - ($(scaleDOM).width() / 2))) + 'px';
+                if (ticks) {
+                    drawTick(position);
+                }
+            }, this);
+        }
+        var sliders = [];
+        var UI = {
+            selected: undefined,
+            startTime: undefined
+        };
+        this.name = interfaceObject.name;
+        var DOMRoot = document.createElement("div");
+        parent.getDOMRoot().appendChild(DOMRoot);
+        DOMRoot.className = "sliderCanvasDiv";
+        DOMRoot.id = "sliderCanvasHolder-" + this.name;
+
+        var axisTitle = document.createElement("div");
+        axisTitle.className = "pageTitle";
+        axisTitle.align = "center";
+        var titleSpan = document.createElement('span');
+        titleSpan.id = "pageTitle-" + this.name;
+        if (interfaceObject.title !== undefined && typeof interfaceObject.title == "string") {
+            titleSpan.textContent = interfaceObject.title;
+        } else {
+            titleSpan.textContent = "Axis " + String(this.id + 1);
+        }
+        axisTitle.appendChild(titleSpan);
+        DOMRoot.appendChild(axisTitle);
+
+        var imageHolder = (function () {
+            var imageController = {};
+            imageController.root = document.createElement("div");
+            imageController.root.className = "imageController";
+            imageController.img = document.createElement("img");
+            imageController.root.appendChild(imageController.img);
+            imageController.setImage = function (src) {
+                imageController.img.src = "";
+                if (typeof src !== "string" || src.length === undefined) {
+                    return;
+                }
+                imageController.img.src = src;
+            };
+            return imageController;
+        })();
+        if (interfaceObject.image !== undefined || page.audioElements.some(function (a) {
+                return a.image !== undefined;
+            })) {
+            DOMRoot.appendChild(imageHolder.root);
+            imageHolder.setImage(interfaceObject.image);
+        }
+
+        // Now create the slider box to hold the fragment sliders
+        var sliderRail = document.createElement("div");
+        sliderRail.id = "sliderrail-" + this.name;
+        sliderRail.className = "slider";
+        sliderRail.align = "left";
+        DOMRoot.appendChild(sliderRail);
+
+        // Canvas for the markers
+        var tickCanvas = document.createElement("canvas");
+        tickCanvas.id = "ticks-" + this.name;
+        tickCanvas.className = "tick-canvas";
+        tickCanvas.height = 150;
+        tickCanvas.width = $(sliderRail).width() - 100;
+        tickCanvas.style.width = ($(sliderRail).width() - 100) + "px";
+        sliderRail.appendChild(tickCanvas);
+
+        // Create the div to hold any scale objects
+        var scale = document.createElement("div");
+        scale.className = "sliderScale";
+        scale.id = "slider-scale-holder-" + this.name;
+        scale.slign = "left";
+        DOMRoot.appendChild(scale);
+        createScaleMarkers(interfaceObject, scale, $(sliderRail).width());
+
+        this.resize = function (event) {
+            var w = $(sliderRail).width();
+            var marginsize = 50;
+            sliders.forEach(function (s) {
+                s.resize();
+            });
+            scale.innerHTML = "";
+            tickCanvas.width = $(sliderRail).width();
+            tickCanvas.style.width = tickCanvas.width + "px";
+            createScaleMarkers(interfaceObject, scale, $(sliderRail).width());
+        };
+        this.playing = function (id) {
+            var node = audioEngineContext.audioObjects.find(function (a) {
+                return a.id == id;
+            });
+            if (node === undefined) {
+                this.imageHolder.setImage(interfaceObject.image || "");
                 return;
             }
-            imageController.img.src = src;
+            var imgurl = node.specification.image || interfaceObject.image || "";
+            this.imageHolder.setImage(imgurl);
         };
-        return imageController;
-    })();
+        this.stopped = function () {
+            var imgurl = interfaceObject.image || "";
+            this.imageHolder.setImage(imgurl);
+        };
+        this.addSlider = function (aoi) {
+            var node = new sliderInterface(aoi, this);
+            sliders.push(node);
+            return node;
+        };
+        this.mousedown = function (sliderUI) {
+            UI.selected = sliderUI;
+            UI.startTime = new Date();
+        };
+        this.mouseup = function (event) {
+            var delta = new Date() - UI.startTime;
+            if (delta < 200) {
+                UI.selected.clicked();
+            } else if (event.type == "touchend" || event.type == "touchcancel") {
+                UI.selected.handleEvent(event);
+            }
+            UI.selected = undefined;
+            UI.startTime = undefined;
+        };
+        this.handleEvent = function (event) {
+            // TODO: Functionalise and scope
+            function getTargetSlider(target) {
+                return sliders.find(function (a) {
+                    return a.DOM == target;
+                });
+            }
+            var time = audioEngineContext.timer.getTestTime();
+            var move, w;
+            if (event.preventDefault) {
+                event.preventDefault();
+            }
+            if (event.type == "touchstart") {
+                var selected = getTargetSlider(event.target);
+                if (typeof selected != "object") {
+                    return;
+                }
+                UI.startTime = new Date();
+                UI.selected = selected;
+            }
+            if (UI.selected === undefined) {
+                return;
+            }
+            if (event.type == "mousemove") {
+                move = event.clientX - 6;
+                w = $(sliderRail).width();
+                move = Math.max(50, move);
+                move = Math.min(w, move);
+                UI.selected.value = (move / w);
+            } else if (event.type == "touchmove") {
+                if (UI.selected == getTargetSlider(event.target)) {
+                    if (event.targetTouches) {
+                        move = event.targetTouches[0].clientX - 6;
+                    } else if (event.originalEvent.targetTouches) {
+                        move = event.originalEvent.targetTouches[0].clientX - 6;
+                    } else {
+                        return;
+                    }
+                    w = $(event.currentTarget).width();
+                    move = Math.max(50, move);
+                    move = Math.min(w, move);
+                    UI.selected.value = (move / w);
+                }
+            } else if (event.type == "touchend" || event.type == "touchcancel") {
+                if (UI.selected == getTargetSlider(event.target)) {
+                    this.mouseup(event);
+                }
+            }
+        };
+        this.checkAllMoved = function () {
+            var notMoved = sliders.filter(function (s) {
+                return !s.hasMoved();
+            });
+            if (notMoved.length !== 0) {
+                var ls = [];
+                notMoved.forEach(function (s) {
+                    ls.push(s.label);
+                });
+                var str = "On axis \"" + interfaceObject.title + "\", ";
+                if (ls.length == 1) {
+                    str += "slider " + ls[0];
+                } else {
+                    str += "sliders " + [ls.slice(0, ls.length - 1).join(", ")].concat(ls[ls.length - 1]).join(" and ");
+                }
+                str += ".";
+                return str;
+            } else {
+                return "";
+            }
+        };
+        this.checkScaleRange = function () {
+            var scaleRange = interfaceObject.options.find(function (a) {
+                return a.name == "scalerange";
+            });
+            if (scaleRange === undefined) {
+                return "";
+            }
+            var scales = {
+                min: scaleRange.min,
+                max: scaleRange.max
+            };
+            var maxSlider = sliders.reduce(function (a, b) {
+                return Math.max(a, b.value);
+            }, 0);
+            var minSlider = sliders.reduce(function (a, b) {
+                return Math.min(a, b.value);
+            }, 100);
+            if (minSlider >= scales.min || maxSlider <= scales.max) {
+                return "On axis \"" + interfaceObject.title + "\", you have not used the required width of the scales";
+            }
+            return "";
+        };
+        sliderRail.addEventListener("mousemove", this);
+        sliderRail.addEventListener("touchstart", this);
+        sliderRail.addEventListener("touchmove", this);
+        sliderRail.addEventListener("touchend", this);
+        sliderRail.addEventListener("touchcancel", this);
+        Object.defineProperties(this, {
+            "sliderRail": {
+                "value": sliderRail
+            }
+        });
+    }
+    this.getDOMRoot = function () {
+        return DOMRoot;
+    };
+    this.getPage = function () {
+        return page;
+    };
+    this.clear = function () {
+        page = undefined;
+        axis = [];
+        AOIs = [];
+        DOMRoot.innerHTML = "";
+    };
+    this.initialisePage = function (page_init) {
+        this.clear();
+        page = page_init;
+        var randomiseAxisOrder;
+        if (page.randomiseAxisOrder !== undefined) {
+            randomiseAxisOrder = page.randomiseAxisOrder;
+        } else {
+            randomiseAxisOrder = page.parent.randomiseAxisOrder;
+        }
+        var commentBoxes = false;
+        // Create each of the interface axis
+        if (randomiseAxisOrder) {
+            page.interfaces = randomiseOrder(page.interfaces);
+        }
+        var interfaceObj = interfaceContext.getCombinedInterfaces(page);
+        interfaceObj.forEach(function (i) {
+            var node = new axisObject(i, this);
+            axis.push(node);
+            i.options.forEach(function (o) {
+                if (o.type == "show" && o.name == "comments") {
+                    commentBoxes = true;
+                }
+            });
+        }, this);
 
-    var pagetitle = document.createElement('div');
-    pagetitle.className = "pageTitle";
-    pagetitle.align = "center";
-    var titleSpan = document.createElement('span');
-    titleSpan.id = "pageTitle-" + this.id;
-    if (interfaceObject.title !== undefined && typeof interfaceObject.title == "string") {
-        titleSpan.textContent = interfaceObject.title;
-    } else {
-        titleSpan.textContent = "Axis " + String(this.id + 1);
-    }
-    pagetitle.appendChild(titleSpan);
-    this.sliderDOM.appendChild(pagetitle);
-
-    if (interfaceObject.image !== undefined || page.audioElements.some(function (a) {
-            return a.image !== undefined;
-        })) {
-        this.sliderDOM.appendChild(this.imageHolder.root);
-        this.imageHolder.setImage(interfaceObject.image);
-    }
-    // Create the slider box to hold the slider elements
-    this.canvas = document.createElement('div');
-    if (this.name !== undefined)
-        this.canvas.id = 'slider-' + this.name;
-    else
-        this.canvas.id = 'slider-' + this.id;
-    this.canvas.setAttribute("interfaceid", this.id);
-    this.canvas.className = 'slider';
-    this.canvas.align = "left";
-    this.canvas.addEventListener('dragover', function (event) {
-        event.preventDefault();
-        event.dataTransfer.effectAllowed = 'none';
-        event.dataTransfer.dropEffect = 'copy';
-        return false;
-    }, false);
-    this.sliderDOM.appendChild(this.canvas);
-
-    // Create the div to hold any scale objects
-    this.scale = document.createElement('div');
-    this.scale.className = 'sliderScale';
-    this.scale.id = 'sliderScaleHolder-' + this.id;
-    this.scale.align = 'left';
-    this.sliderDOM.appendChild(this.scale);
-    var positionScale = this.canvas.style.width.substr(0, this.canvas.style.width.length - 2);
-    var offset = 50;
-    var dest = document.getElementById("slider-holder").appendChild(this.sliderDOM);
-    interfaceObject.scales.forEach(function (scaleObj) {
-        var position = Number(scaleObj.position) * 0.01;
-        var pixelPosition = (position * $(this.canvas).width()) + offset;
-        var scaleDOM = document.createElement('span');
-        scaleDOM.className = "ape-marker-text";
-        scaleDOM.textContent = scaleObj.text;
-        scaleDOM.setAttribute('value', position);
-        this.scale.appendChild(scaleDOM);
-        scaleDOM.style.left = Math.floor((pixelPosition - ($(scaleDOM).width() / 2))) + 'px';
-    }, this);
-
-    this.createSliderObject = function (audioObject, label) {
-        var trackObj = document.createElement('div');
-        trackObj.align = "center";
-        trackObj.className = 'track-slider track-slider-disabled track-slider-' + audioObject.id;
-        trackObj.id = 'track-slider-' + this.id + '-' + audioObject.id;
-        trackObj.setAttribute('trackIndex', audioObject.id);
-        if (this.name !== undefined) {
-            trackObj.setAttribute('interface-name', this.name);
-        } else {
-            trackObj.setAttribute('interface-name', this.id);
+        // Create the audioObject interface objects for each aO.
+        page.audioElements.forEach(function (element, index) {
+            var audioObject = audioEngineContext.newTrack(element);
+            if (element.type == 'outside-reference') {
+                // Construct outside reference;
+                var orNode = new outsideReferenceDOM(audioObject, index, document.getElementById("outside-reference-holder"));
+                audioObject.bindInterface(orNode);
+            } else {
+                var aoi = new audioObjectInterface(audioObject, this);
+                AOIs.push(aoi);
+                var label = interfaceContext.getLabel(page.label, index, page.labelStart);
+                axis.forEach(function (a) {
+                    var node = a.addSlider(aoi);
+                    node.setLabel(label);
+                    aoi.addSlider(node);
+                });
+                audioObject.bindInterface(aoi);
+                if (commentBoxes) {
+                    interfaceContext.commentBoxes.createCommentBox(audioObject);
+                }
+            }
+        });
+    };
+    this.checkAllMoved = function () {
+        var str = "You have not moved the following sliders. ";
+        var cont = true;
+        axis.forEach(function (a) {
+            var msg = a.checkAllMoved();
+            if (msg.length > 0) {
+                cont = false;
+                str += msg;
+            }
+        });
+        if (!cont) {
+            interfaceContext.lightbox.post("Error", str);
+            interfaceContext.storeErrorNode(str);
+            console.log(str);
         }
-        var offset = 50;
-        // Distribute it randomnly
-        var w = window.innerWidth - (offset + 8) * 2;
-        w = Math.random() * w;
-        w = Math.floor(w + (offset + 8));
-        trackObj.style.left = w + 'px';
-        this.canvas.appendChild(trackObj);
-        this.sliders.push(trackObj);
-        this.metrics.push(new metricTracker(this));
-        var labelHolder = document.createElement("span");
-        labelHolder.textContent = label;
-        trackObj.appendChild(labelHolder);
-        var rate = convSliderPosToRate(trackObj);
-        this.metrics[this.metrics.length - 1].initialise(rate);
-        trackObj.setAttribute("slider-value", rate);
-        return trackObj;
+        return cont;
     };
-
-    this.resize = function (event) {
-        var sliderDiv = this.canvas;
-        var sliderScaleDiv = this.scale;
-        var width = $(sliderDiv).width();
-        var marginsize = 50;
-        // Move sliders into new position
-        this.sliders.forEach(function (slider, index) {
-            var pix = Number(slider.getAttribute("slider-value")) * width;
-            slider.style.left = (pix + marginsize) + 'px';
+    this.checkScaleRange = function () {
+        var str = "";
+        var cont = true;
+        axis.forEach(function (a) {
+            var msg = a.checkScaleRange();
+            if (msg.length > 0) {
+                cont = false;
+                str += msg;
+            }
         });
-
-        // Move scale labels
-        for (var index = 0; index < this.scale.children.length; index++) {
-            var scaleObj = this.scale.children[index];
-            var position = Number(scaleObj.attributes.value.value);
-            var pixelPosition = (position * width) + marginsize;
-            scaleObj.style.left = Math.floor((pixelPosition - ($(scaleObj).width() / 2))) + 'px';
+        if (!cont) {
+            interfaceContext.lightbox.post("Error", str);
+            interfaceContext.storeErrorNode(str);
+            console.log(str);
         }
+        return cont;
     };
-
-    this.playing = function (id) {
-        var node = audioEngineContext.audioObjects.find(function (a) {
-            return a.id == id;
-        });
-        if (node === undefined) {
-            this.imageHolder.setImage(interfaceObject.image || "");
-            return;
-        }
-        var imgurl = node.specification.image || interfaceObject.image || "";
-        this.imageHolder.setImage(imgurl);
-    };
-}
-
-function sliderObject(audioObject, interfaceObjects, index) {
-    // Create a new slider object;
-    this.parent = audioObject;
-    this.trackSliderObjects = [];
-    this.label = interfaceContext.getLabel(audioObject.specification.parent.label, index, audioObject.specification.parent.labelStart);
-    this.playing = false;
-    for (var i = 0; i < interfaceContext.interfaceSliders.length; i++) {
-        var trackObj = interfaceContext.interfaceSliders[i].createSliderObject(audioObject, this.label);
-        this.trackSliderObjects.push(trackObj);
-    }
-
-    // Onclick, switch playback to that track
-
-    this.enable = function () {
-        if (this.parent.state == 1) {
-            $(this.trackSliderObjects).each(function (i, trackObj) {
-                $(trackObj).removeClass('track-slider-disabled');
+    this.pageXMLSave = function (store, pageSpecification) {
+        if (axis.length > 1) {
+            AOIs.forEach(function (ao) {
+                ao.pageXMLSave(store);
             });
         }
     };
-    this.updateLoading = function (progress) {
-        if (progress != 100) {
-            progress = String(progress);
-            progress = progress.split('.')[0];
-            this.trackSliderObjects[0].children[0].textContent = progress + '%';
-        } else {
-            this.trackSliderObjects[0].children[0].textContent = this.label;
-        }
-    };
-    this.startPlayback = function () {
-        $('.track-slider').removeClass('track-slider-playing');
-        var name = ".track-slider-" + this.parent.id;
-        $(name).addClass('track-slider-playing');
-        interfaceContext.commentBoxes.highlightById(audioObject.id);
-        $('.outside-reference').removeClass('track-slider-playing');
-        this.playing = true;
-
-        if (this.parent.specification.parent.playOne || specification.playOne) {
-            $('.track-slider').addClass('track-slider-disabled');
-            $('.outside-reference').addClass('track-slider-disabled');
-        }
-        interfaceContext.interfaceSliders.forEach(function (ts) {
-            ts.playing(this.parent.id);
-        }, this);
-    };
-    this.stopPlayback = function () {
-        if (this.playing) {
-            this.playing = false;
-            var name = ".track-slider-" + this.parent.id;
-            $(name).removeClass('track-slider-playing');
-            $('.track-slider').removeClass('track-slider-disabled');
-            $('.outside-reference').removeClass('track-slider-disabled');
-            var box = interfaceContext.commentBoxes.boxes.find(function (a) {
-                return a.id === audioObject.id;
-            });
-            if (box) {
-                box.highlight(false);
-            }
-        }
-    };
-    this.exportXMLDOM = function (audioObject) {
-        // Called by the audioObject holding this element. Must be present
-        var obj = [];
-        $(this.trackSliderObjects).each(function (i, trackObj) {
-            var node = storage.document.createElement('value');
-            if (trackObj.getAttribute("interface-name") !== "null") {
-                node.setAttribute("interface-name", trackObj.getAttribute("interface-name"));
-            }
-            node.textContent = convSliderPosToRate(trackObj);
-            obj.push(node);
+    this.resize = function (event) {
+        axis.forEach(function (a) {
+            a.resize(event);
         });
-
-        return obj;
-    };
-    this.getValue = function () {
-        return convSliderPosToRate(this.trackSliderObjects[0]);
-    };
-    this.getPresentedId = function () {
-        return this.label;
-    };
-    this.canMove = function () {
-        return true;
-    };
-    this.error = function () {
-        // audioObject has an error!!
-        this.playback.textContent = "Error";
-        $(this.playback).addClass("error-colour");
     };
 }
 
@@ -753,6 +845,9 @@
     if (interfaceContext.checkFragmentMinPlays() === false) {
         return;
     }
+    if (interfaceContext.checkCommentQuestions() === false) {
+        return;
+    }
 
     for (var i = 0; i < checks.length; i++) {
         var checkState = true;
@@ -820,9 +915,7 @@
     // MANDATORY FUNCTION
 
     // Resize the slider objects
-    for (var i = 0; i < interfaceContext.interfaceSliders.length; i++) {
-        interfaceContext.interfaceSliders[i].resize(event);
-    }
+    window.module.resize(event);
 }
 
 function pageXMLSave(store, pageSpecification) {
@@ -833,32 +926,5 @@
     // pageSpecification is the current page node configuration
     // To create new XML nodes, use storage.document.createElement();
 
-    if (interfaceContext.interfaceSliders.length == 1) {
-        // If there is only one axis, there only needs to be one metric return
-        return;
-    }
-    var audioelements = store.getElementsByTagName("audioelement");
-    for (var i = 0; i < audioelements.length; i++) {
-        // Have to append the metric specific nodes
-        if (pageSpecification.outsideReference === undefined || pageSpecification.outsideReference.id != audioelements[i].id) {
-            var inject = audioelements[i].getElementsByTagName("metric");
-            if (inject.length === 0) {
-                inject = storage.document.createElement("metric");
-            } else {
-                inject = inject[0];
-            }
-            for (var k = 0; k < interfaceContext.interfaceSliders.length; k++) {
-                var mrnodes = interfaceContext.interfaceSliders[k].metrics[i].exportXMLDOM(inject);
-                for (var j = 0; j < mrnodes.length; j++) {
-                    var name = mrnodes[j].getAttribute("name");
-                    if (name == "elementTracker" || name == "elementTrackerFull" || name == "elementInitialPosition" || name == "elementFlagMoved") {
-                        if (interfaceContext.interfaceSliders[k].name !== null) {
-                            mrnodes[j].setAttribute("interface-name", interfaceContext.interfaceSliders[k].name);
-                        }
-                        mrnodes[j].setAttribute("interface-id", k);
-                    }
-                }
-            }
-        }
-    }
+    module.pageXMLSave(store, pageSpecification);
 }
diff -r cb227441a102 -r a8455b0766cd interfaces/discrete.css
--- a/interfaces/discrete.css	Wed Nov 28 13:50:22 2018 +0000
+++ b/interfaces/discrete.css	Wed Nov 28 13:51:51 2018 +0000
@@ -20,79 +20,47 @@
     min-width: 20px;
     background-color: #ddd
 }
-div#slider-holder {
-    height: inherit;
-    position: absolute;
-    left: 0px;
-    z-index: 3;
-    margin-top: 25px;
+div#slider-box {
+    width: 75%;
+    height: auto;
+    margin: auto;
+    padding-bottom: 20px;
 }
-div#scale-holder {
-    position: absolute;
-    left: 0px;
-    z-index: 2;
+div#slider-grid {
+    display: grid;
+    grid-template-columns: 1fr;
+    grid-row-gap: 10px;
 }
 div#scale-text-holder {
-    position: relative;
-    float: left;
+    display: grid;
+    grid-template-rows: 1fr;
+    min-height: 25px;
+    text-align: center;
+}
+div.discrete-row {
+    display: grid;
+    grid-template-rows: 1fr;
+    padding: 10px;
+    border: 1px solid black;
+    height: 50px;
+    line-height: 50px;
+}
+button.discrete-button {
+    width: 100px;
+}
+div.discrete-label {
+    width: 100px;
+    text-align: center;
 }
 div.scale-text {
-    position: absolute;
-    font-size: 1.2em;
-}
-canvas#scale-canvas {
-    position: relative;
-    float: left;
-}
-div.track-slider {
-    float: left;
-    height: 30px;
-    border: solid;
-    border-width: 1px;
-    border-color: black;
-    padding: 2px;
-    margin-left: 94px;
-    margin-bottom: 30px;
-}
-div.track-slider-range {
-    float: left;
-    height: 100%;
-    margin: 0px 50px;
     position: relative;
 }
-div.track-slider-title {
-    float: left;
-    padding-top: 5px;
-    width: 100px;
+div.scale-text > span {
+    position: absolute;
+    bottom: 0;
+    width: 100%;
+    left: 0;
 }
-button.track-slider-button {
-    float: left;
-    width: 100px;
-    height: 30px;
+div.discrete-row-playing {
+    background-color: rgba(255, 201, 201, 0.5);
 }
-input.track-radio {
-    position: absolute;
-    margin: 9px 0px;
-}
-div#outside-reference-holder {
-    display: flex;
-    align-content: center;
-    justify-content: center;
-    margin-bottom: 5px;
-}
-button.outside-reference {
-    position: inherit;
-    margin: 0px 5px;
-}
-div.track-slider-playing {
-    background-color: #FFDDDD;
-}
-div#page-count {
-    float: left;
-    margin: 0px 5px;
-}
-div#master-volume-holder {
-    position: absolute;
-    top: 10px;
-    left: 120px;
-}
diff -r cb227441a102 -r a8455b0766cd interfaces/discrete.js
--- a/interfaces/discrete.js	Wed Nov 28 13:50:22 2018 +0000
+++ b/interfaces/discrete.js	Wed Nov 28 13:51:51 2018 +0000
@@ -1,4 +1,8 @@
-/* globals interfaceContext, document, window, $, specification, audioEngineContext, console, window, testState, storage */
+/**
+ * WAET Blank Template
+ * Use this to start building your custom interface
+ */
+/*globals window, interfaceContext, testState, Interface, audioEngineContext, console, document, specification, $, storage*/
 // Once this is loaded and parsed, begin execution
 loadInterface();
 
@@ -56,44 +60,41 @@
             console.log('Stopped at ' + time); // DEBUG/SAFETY
         }
     };
-
-    // Create outside reference holder
-    var outsideRef = document.createElement("div");
-    outsideRef.id = "outside-reference-holder";
-
     // Create Submit (save) button
     var submit = document.createElement("button");
     submit.innerHTML = 'Next';
     submit.onclick = buttonSubmitClick;
     submit.id = 'submit-button';
     submit.style.float = 'left';
+
+    // Create the sort button
+    var sort = document.createElement("button");
+    sort.id = "sort-fragments";
+    sort.textContent = "Sort";
+    sort.style.display = "inline-block";
+    sort.style.visibility = "hidden";
+    sort.onclick = buttonSortFragmentClick;
+
     // Append the interface buttons into the interfaceButtons object.
     interfaceButtons.appendChild(playback);
     interfaceButtons.appendChild(submit);
+    interfaceButtons.appendChild(sort);
 
-    // Create a slider box
-    var sliderBox = document.createElement('div');
-    sliderBox.style.width = "100%";
-    sliderBox.style.height = window.innerHeight - 200 + 12 + 'px';
-    sliderBox.style.marginBottom = '10px';
-    sliderBox.id = 'slider';
-    var scaleHolder = document.createElement('div');
-    scaleHolder.id = "scale-holder";
-    scaleHolder.style.marginLeft = "107px";
-    sliderBox.appendChild(scaleHolder);
+
+    // Create outside reference holder
+    var outsideRef = document.createElement("div");
+    outsideRef.id = "outside-reference-holder";
+
+    // Create a holder for the slider rows
+    var sliderBox = document.createElement("div");
+    sliderBox.id = 'slider-box';
+    var sliderGrid = document.createElement("div");
+    sliderGrid.id = "slider-grid";
+    sliderBox.appendChild(sliderGrid);
     var scaleText = document.createElement('div');
     scaleText.id = "scale-text-holder";
-    scaleText.style.height = "25px";
-    scaleText.style.width = "100%";
-    scaleHolder.appendChild(scaleText);
-    var scaleCanvas = document.createElement('canvas');
-    scaleCanvas.id = "scale-canvas";
-    scaleCanvas.style.marginLeft = "150px";
-    scaleHolder.appendChild(scaleCanvas);
-    var sliderObjectHolder = document.createElement('div');
-    sliderObjectHolder.id = 'slider-holder';
-    sliderObjectHolder.align = "center";
-    sliderBox.appendChild(sliderObjectHolder);
+    sliderGrid.appendChild(scaleText);
+
 
     // Global parent for the comment boxes on the page
     var feedbackHolder = document.createElement('div');
@@ -118,11 +119,16 @@
 
 function loadTest(page) {
     // Called each time a new test page is to be build. The page specification node is the only item passed in
-    var id = page.id;
 
     var feedbackHolder = document.getElementById('feedbackHolder');
+    var sliderBox = document.getElementById('slider-box');
+    var sliderGrid = document.getElementById("slider-grid");
+    var scaleTextHolder = document.getElementById("scale-text-holder");
+    var interfaceObj = interfaceContext.getCombinedInterfaces(page);
+    var commentBoxPrefix = "Comment on track";
+    var loopPlayback = page.loop;
     feedbackHolder.innerHTML = "";
-    var interfaceObj = interfaceContext.getCombinedInterfaces(page);
+
     if (interfaceObj.length > 1) {
         console.log("WARNING - This interface only supports one <interface> node per page. Using first interface node");
     }
@@ -132,7 +138,7 @@
     if (typeof page.title == "string" && page.title.length > 0) {
         document.getElementById("test-title").textContent = page.title;
     }
-
+    // Set the axis title
     if (interfaceObj.title !== null) {
         document.getElementById("pageTitle").textContent = interfaceObj.title;
     }
@@ -147,15 +153,67 @@
     // Delete outside reference
     document.getElementById("outside-reference-holder").innerHTML = "";
 
-    var sliderBox = document.getElementById('slider-holder');
-    sliderBox.innerHTML = "";
-
-    var commentBoxPrefix = "Comment on track";
+    // Get the comment box prefix
     if (interfaceObj.commentBoxPrefix !== undefined) {
         commentBoxPrefix = interfaceObj.commentBoxPrefix;
     }
-    var loopPlayback = page.loop;
 
+    // Populate the comment questions
+    $(page.commentQuestions).each(function (index, element) {
+        var node = interfaceContext.createCommentQuestion(element);
+        feedbackHolder.appendChild(node.holder);
+    });
+
+    // Configure the grid
+    var numRows = page.audioElements.filter(function (a) {
+        return (a.type !== "outside-reference");
+    }).length;
+    var numColumns = page.interfaces[0].scales.length;
+    sliderGrid.style.gridTemplateRows = "50px repeat(" + numRows + ", 72px)";
+    scaleTextHolder.style.gridTemplateColumns = "100px repeat(" + numColumns + ", 1fr) 100px";
+    page.interfaces[0].scales.sort(function (a, b) {
+        if (a.position > b.position) {
+            return 1;
+        } else if (a.position < b.position) {
+            return -1;
+        }
+        return 0;
+    }).forEach(function (a, i) {
+        var h = document.createElement("div");
+        var text = document.createElement("span");
+        h.className = "scale-text";
+        h.style.gridColumn = String(i + 2) + "/" + String(i + 3);
+        text.textContent = a.text;
+        h.appendChild(text);
+        scaleTextHolder.appendChild(h);
+    });
+
+    // Find all the audioElements from the audioHolder
+    var index = 0;
+    var labelType = page.label;
+    if (labelType == "default") {
+        labelType = "number";
+    }
+    $(page.audioElements).each(function (pageIndex, element) {
+        // Find URL of track
+        // In this jQuery loop, variable 'this' holds the current audioElement.
+
+        var audioObject = audioEngineContext.newTrack(element);
+        if (element.type == 'outside-reference') {
+            // Construct outside reference;
+            var orNode = new interfaceContext.outsideReferenceDOM(audioObject, index, document.getElementById("outside-reference-holder"));
+            audioObject.bindInterface(orNode);
+        } else {
+            // Create a slider per track
+            var label = interfaceContext.getLabel(labelType, index, page.labelStart);
+            var sliderObj = new discreteObject(audioObject, label);
+            sliderGrid.appendChild(sliderObj.DOMRoot);
+            audioObject.bindInterface(sliderObj);
+            interfaceContext.commentBoxes.createCommentBox(audioObject);
+            index += 1;
+        }
+
+    });
     interfaceObj.options.forEach(function (option) {
         if (option.type == "show") {
             switch (option.name) {
@@ -187,204 +245,109 @@
                 case "comments":
                     interfaceContext.commentBoxes.showCommentBoxes(feedbackHolder, true);
                     break;
+                case "fragmentSort":
+                    var button = document.getElementById('sort-fragments');
+                    button.style.visibility = "visible";
+                    break;
             }
         }
     });
-
-    // Find all the audioElements from the audioHolder
-    var index = 0;
-    var interfaceScales = page.interfaces[0].scales;
-    var labelType = page.label;
-    if (labelType == "default") {
-        labelType = "number";
-    }
-    $(page.audioElements).each(function (pageIndex, element) {
-        // Find URL of track
-        // In this jQuery loop, variable 'this' holds the current audioElement.
-
-        var audioObject = audioEngineContext.newTrack(element);
-        if (element.type == 'outside-reference') {
-            // Construct outside reference;
-            var orNode = new interfaceContext.outsideReferenceDOM(audioObject, index, document.getElementById("outside-reference-holder"));
-            audioObject.bindInterface(orNode);
-        } else {
-            // Create a slider per track
-            var label = interfaceContext.getLabel(labelType, index, page.labelStart);
-            var sliderObj = new discreteObject(audioObject, label, interfaceScales);
-            sliderBox.appendChild(sliderObj.holder);
-            audioObject.bindInterface(sliderObj);
-            interfaceContext.commentBoxes.createCommentBox(audioObject);
-            index += 1;
-        }
-
-    });
-
-    $(page.commentQuestions).each(function (index, element) {
-        var node = interfaceContext.createCommentQuestion(element);
-        feedbackHolder.appendChild(node.holder);
-    });
-
     // Auto-align
     resizeWindow(null);
 }
 
-function discreteObject(audioObject, label, interfaceScales) {
+function discreteObject(audioObject, label) {
     // An example node, you can make this however you want for each audioElement.
     // However, every audioObject (audioEngineContext.audioObject) MUST have an interface object with the following
     // You attach them by calling audioObject.bindInterface( )
-    if (interfaceScales === null || interfaceScales.length === 0) {
-        console.log("WARNING: The discrete radio's are built depending on the number of scale points specified! Ensure you have some specified. Defaulting to 5 for now!");
-        var numOptions = 5;
-    }
-    this.parent = audioObject;
+    var playing = false;
 
-    this.holder = document.createElement('div');
-    this.title = document.createElement('div');
-    this.discreteHolder = document.createElement('div');
-    this.discretes = [];
-    this.play = document.createElement('button');
-
-    this.holder.className = 'track-slider';
-    this.holder.style.width = window.innerWidth - 200 + 'px';
-    this.holder.appendChild(this.title);
-    this.holder.appendChild(this.discreteHolder);
-    this.holder.appendChild(this.play);
-    this.holder.setAttribute('trackIndex', audioObject.id);
-    this.title.textContent = label;
-    this.title.className = 'track-slider-title';
-
-    this.discreteHolder.className = "track-slider-range";
-    this.discreteHolder.style.width = window.innerWidth - 500 + 'px';
-    this.radioClicked = function (event) {
-        var time = audioEngineContext.timer.getTestTime();
-        if (audioEngineContext.status === 0) {
-            event.currentTarget.checked = false;
-            return;
+    function buttonClicked(event) {
+        if (!playing) {
+            audioEngineContext.play(audioObject.id);
+        } else {
+            audioEngineContext.stop();
         }
-        var id = this.parent.id;
-        var position = this.getValue();
-        this.parent.metric.moved(time, position);
-        console.log('slider ' + id + ' moved to ' + position + ' (' + time + ')');
-
-    };
-    this.handleEvent = function (event) {
-        if (event.currentTarget.getAttribute("name") === this.parent.specification.id) {
-            this.radioClicked(event);
-        }
-    };
-    for (var i = 0; i < interfaceScales.length; i++) {
-        var node = document.createElement('input');
-        node.setAttribute('type', 'radio');
-        node.className = 'track-radio';
-        node.disabled = true;
-        node.setAttribute('position', interfaceScales[i].position);
-        node.setAttribute('name', audioObject.specification.id);
-        node.setAttribute('id', audioObject.specification.id + '-' + String(i));
-        this.discretes.push(node);
-        this.discreteHolder.appendChild(node);
-        node.addEventListener("click", this);
     }
 
-    this.play.className = 'track-slider-button';
-    this.play.textContent = "Loading...";
-    this.play.value = audioObject.id;
-    this.play.disabled = true;
-    this.play.setAttribute("playstate", "ready");
-    this.play.onclick = function (event) {
-        var id = Number(event.currentTarget.value);
-        //audioEngineContext.metric.sliderPlayed(id);
-        if (event.currentTarget.getAttribute("playstate") == "ready")
-            audioEngineContext.play(id);
-        else if (event.currentTarget.getAttribute("playstate") == "playing")
-            audioEngineContext.stop();
-    };
-    this.resize = function (event) {
-        this.holder.style.width = window.innerWidth - 200 + 'px';
-        this.discreteHolder.style.width = window.innerWidth - 500 + 'px';
-        //text.style.left = (posPix+150-($(text).width()/2)) +'px';
-        for (var i = 0; i < this.discretes.length; i++) {
-            var width = $(this.discreteHolder).width() - 20;
-            var node = this.discretes[i];
-            var nodeW = $(node).width();
-            var position = node.getAttribute('position');
-            var posPix = Math.round(width * (position / 100.0));
-            node.style.left = (posPix + 10 - (nodeW / 2)) + 'px';
+    function radioSelected(event) {
+        var time = audioEngineContext.timer.getTestTime();
+        audioObject.metric.moved(time, event.currentTarget.value);
+        console.log("slider " + audioObject.id + " moved to " + event.currentTarget.value + "(" + time + ")");
+    }
+
+    var root = document.createElement("div"),
+        labelHolder = document.createElement("div"),
+        button = document.createElement("button");
+    root.className = "discrete-row";
+    labelHolder.className = "discrete-label";
+    button.className = "discrete-button";
+    root.appendChild(labelHolder);
+
+    var labelSpan = document.createElement("span");
+    labelHolder.appendChild(labelSpan);
+    labelSpan.textContent = label;
+    button.textContent = "Listen";
+    button.disabled = "true";
+    button.addEventListener("click", this);
+
+    var numScales = audioObject.specification.parent.interfaces[0].scales.length;
+    root.style.gridTemplateColumns = "100px repeat(" + numScales + ", 1fr) 100px";
+    for (var n = 0; n < numScales; n++) {
+        var input = document.createElement("input");
+        input.type = "radio";
+        input.disabled = "true";
+        input.value = n / (numScales - 1);
+        input.addEventListener("click", this);
+        input.name = audioObject.specification.id;
+        root.appendChild(input);
+    }
+    root.appendChild(button);
+    this.handleEvent = function (event) {
+        if (event.currentTarget === button) {
+            buttonClicked(event);
+        } else if (event.currentTarget.type === "radio") {
+            radioSelected(event);
         }
     };
     this.enable = function () {
         // This is used to tell the interface object that playback of this node is ready
-        this.play.disabled = false;
-        this.play.textContent = "Play";
-        $(this.slider).removeClass('track-slider-disabled');
-        this.discretes.forEach(function (elem) {
-            elem.disabled = false;
-        });
+        button.disabled = "";
+        var a = root.querySelectorAll("input[type=\"radio\"]");
+        for (var n = 0; n < a.length; n++) {
+            a[n].disabled = false;
+        }
+        button.textContent = "Listen";
     };
     this.updateLoading = function (progress) {
         // progress is a value from 0 to 100 indicating the current download state of media files
-        if (progress != 100) {
-            progress = String(progress);
-            progress = progress.split('.')[0];
-            this.play.textContent = progress + '%';
-        } else {
-            this.play.textContent = "Play";
-        }
+        button.textContent = progress + "%";
     };
-
     this.startPlayback = function () {
-        // Called by audioObject when playback begins
-        this.play.setAttribute("playstate", "playing");
-        $(".track-slider").removeClass('track-slider-playing');
-        $(this.holder).addClass('track-slider-playing');
-        var outsideReference = document.getElementById('outside-reference');
-        this.play.textContent = "Listening";
-        if (outsideReference !== null) {
-            $(outsideReference).removeClass('track-slider-playing');
-        }
-        if (this.parent.specification.parent.playOne || specification.playOne) {
-            $('.track-slider-button').text = "Wait";
-            $('.track-slider-button').attr("disabled", "true");
-        }
-        interfaceContext.commentBoxes.highlightById(audioObject.id);
-        if (audioObject.specification.image !== undefined) {
-            interfaceContext.imageHolder.setImage(audioObject.specification.image);
-        }
+        // Called when playback has begun
+        playing = true;
+        $(root).addClass("discrete-row-playing");
+        button.textContent = "Stop";
     };
     this.stopPlayback = function () {
-        // Called by audioObject when playback stops
-        if (this.play.getAttribute("playstate") == "playing") {
-            this.play.setAttribute("playstate", "ready");
-            $(this.holder).removeClass('track-slider-playing');
-            $('.track-slider-button').text = "Play";
-            this.play.textContent = "Play";
-            $('.track-slider-button').removeAttr("disabled");
-            var box = interfaceContext.commentBoxes.boxes.find(function (a) {
-                return a.id === audioObject.id;
-            });
-            if (box) {
-                box.highlight(false);
-            }
-            if (audioObject.specification.parent.interfaces[0].image !== undefined) {
-                interfaceContext.imageHolder.setImage(audioObject.specification.parent.interfaces[0].image);
-            } else {
-                interfaceContext.imageHolder.setImage("");
+        // Called when playback has stopped. This gets called even if playback never started!
+        playing = false;
+        $(root).removeClass("discrete-row-playing");
+        button.textContent = "Listen";
+    };
+    this.getValue = function () {
+        // Return the current value of the object. If there is no value, return 0
+        var a = root.querySelectorAll("input[type=\"radio\"]");
+        for (var n = 0; n < a.length; n++) {
+            if (a[n].checked) {
+                return Number(a[n].value);
             }
         }
-    };
-
-    this.getValue = function () {
-        // Return the current value of the object. If there is no value, return -1
-        var checkedElement = this.discretes.find(function (elem) {
-            return elem.checked;
-        });
-        if (checkedElement === undefined) {
-            return -1;
-        }
-        return checkedElement.getAttribute("position") / 100.0;
+        return -1;
     };
     this.getPresentedId = function () {
         // Return the presented ID of the object. For instance, the APE has sliders starting from 0. Whilst AB has alphabetical scale
-        return this.title.textContent;
+        return label;
     };
     this.canMove = function () {
         // Return either true or false if the interface object can be moved. AB / Reference cannot, whilst sliders can and therefore have a continuous scale.
@@ -399,75 +362,36 @@
         var node = storage.document.createElement('value');
         node.textContent = this.getValue();
         return node;
+
     };
     this.error = function () {
-        // audioObject has an error!!
-        this.playback.textContent = "Error";
-        $(this.playback).addClass("error-colour");
+        // If there is an error with the audioObject, this will be called to indicate a failure
     };
+    Object.defineProperties(this, {
+        "DOMRoot": {
+            "value": root
+        }
+    });
 }
 
 function resizeWindow(event) {
     // Called on every window resize event, use this to scale your page properly
-    var numObj = document.getElementsByClassName('track-slider').length;
-    var totalHeight = (numObj * 66) - 30;
-    document.getElementById('scale-holder').style.width = window.innerWidth - 220 + 'px';
-    // Cheers edge for making me delete a canvas every resize.
-    var canvas = document.getElementById('scale-canvas');
-    var new_canvas = document.createElement("canvas");
-    new_canvas.id = 'scale-canvas';
-    new_canvas.style.marginLeft = "150px";
-    canvas.parentElement.appendChild(new_canvas);
-    canvas.parentElement.removeChild(canvas);
-    new_canvas.width = window.innerWidth - 520;
-    new_canvas.height = totalHeight;
-    for (var i in audioEngineContext.audioObjects) {
-        if (audioEngineContext.audioObjects[i].specification.type != 'outside-reference') {
-            audioEngineContext.audioObjects[i].interfaceDOM.resize(event);
-        }
-    }
-    document.getElementById('slider-holder').style.height = totalHeight + 'px';
-    document.getElementById('slider').style.height = totalHeight + 70 + 'px';
-    drawScale();
 }
 
-function drawScale() {
-    var interfaceObj = testState.currentStateMap.interfaces[0];
-    var scales = testState.currentStateMap.interfaces[0].scales;
-    scales = scales.sort(function (a, b) {
-        return a.position - b.position;
+function buttonSortFragmentClick() {
+    var sortIndex = interfaceContext.sortFragmentsByScore();
+    var sliderBox = document.getElementById("slider-holder");
+    var nodes = audioEngineContext.audioObjects.filter(function (ao) {
+        return ao.specification.type !== "outside-reference";
     });
-    var canvas = document.getElementById('scale-canvas');
-    var ctx = canvas.getContext("2d");
-    var height = canvas.height;
-    var width = canvas.width;
-    var textHolder = document.getElementById('scale-text-holder');
-    textHolder.innerHTML = "";
-    ctx.fillStyle = "#000000";
-    ctx.setLineDash([1, 4]);
-    scales.forEach(function (scale) {
-        var posPercent = scale.position / 100.0;
-        var posPix = Math.round(width * posPercent);
-        if (posPix <= 0) {
-            posPix = 1;
-        }
-        if (posPix >= width) {
-            posPix = width - 1;
-        }
-        ctx.moveTo(posPix, 0);
-        ctx.lineTo(posPix, height);
-        ctx.stroke();
-
-        var text = document.createElement('div');
-        text.align = "center";
-        var textC = document.createElement('span');
-        textC.textContent = scale.text;
-        text.appendChild(textC);
-        text.className = "scale-text";
-        textHolder.appendChild(text);
-        text.style.width = $(text.children[0]).width() + 'px';
-        text.style.left = (posPix + 150 - ($(text).width() / 2)) + 'px';
+    var i;
+    nodes.forEach(function (ao) {
+        sliderBox.removeChild(ao.interfaceDOM.holder);
     });
+    for (i = 0; i < nodes.length; i++) {
+        var j = sortIndex[i];
+        sliderBox.appendChild(nodes[j].interfaceDOM.holder);
+    }
 }
 
 function buttonSubmitClick() // TODO: Only when all songs have been played!
@@ -485,9 +409,12 @@
     if (interfaceContext.checkFragmentMinPlays() === false) {
         return;
     }
+    if (interfaceContext.checkCommentQuestions() === false) {
+        return;
+    }
 
     for (var i = 0; i < checks.length; i++) {
-        var checkState;
+        var checkState = true;
         if (checks[i].type == 'check') {
             switch (checks[i].name) {
                 case 'fragmentPlayed':
@@ -510,16 +437,15 @@
                 case 'scalerange':
                     // Check the scale has been used effectively
                     checkState = interfaceContext.checkScaleRange(checks[i].errorMessage);
+
                     break;
                 default:
                     console.log("WARNING - Check option " + checks[i].check + " is not supported on this interface");
                     break;
             }
-            if (checkState === false) {
-                canContinue = false;
-            }
         }
-        if (!canContinue) {
+        if (checkState === false) {
+            canContinue = false;
             break;
         }
     }
diff -r cb227441a102 -r a8455b0766cd interfaces/horizontal-sliders.js
--- a/interfaces/horizontal-sliders.js	Wed Nov 28 13:50:22 2018 +0000
+++ b/interfaces/horizontal-sliders.js	Wed Nov 28 13:51:51 2018 +0000
@@ -62,9 +62,20 @@
     submit.onclick = buttonSubmitClick;
     submit.id = 'submit-button';
     submit.style.float = 'left';
+
+    // Create the sort button
+    var sort = document.createElement("button");
+    sort.id = "sort-fragments";
+    sort.textContent = "Sort";
+    sort.style.display = "inline-block";
+    sort.style.visibility = "hidden";
+    sort.onclick = buttonSortFragmentClick;
+
     // Append the interface buttons into the interfaceButtons object.
     interfaceButtons.appendChild(playback);
     interfaceButtons.appendChild(submit);
+    interfaceButtons.appendChild(sort);
+
 
     // Create outside reference holder
     var outsideRef = document.createElement("div");
@@ -226,6 +237,10 @@
                 case "comments":
                     interfaceContext.commentBoxes.showCommentBoxes(feedbackHolder, true);
                     break;
+                case "fragmentSort":
+                    var button = document.getElementById('sort-fragments');
+                    button.style.visibility = "visible";
+                    break;
             }
         }
     });
@@ -383,6 +398,14 @@
 function drawScale() {
     var interfaceObj = testState.currentStateMap.interfaces[0];
     var scales = testState.currentStateMap.interfaces[0].scales;
+    var ticks = specification.interfaces.options.concat(interfaceObj.options).find(function (a) {
+        return (a.type == "show" && a.name == "ticks");
+    });
+    if (ticks !== undefined) {
+        ticks = true;
+    } else {
+        ticks = false;
+    }
     scales = scales.sort(function (a, b) {
         return a.position - b.position;
     });
@@ -403,9 +426,11 @@
         if (posPix >= width) {
             posPix = width - 1;
         }
-        ctx.moveTo(posPix, 0);
-        ctx.lineTo(posPix, height);
-        ctx.stroke();
+        if (ticks) {
+            ctx.moveTo(posPix, 0);
+            ctx.lineTo(posPix, height);
+            ctx.stroke();
+        }
 
         var text = document.createElement('div');
         text.align = "center";
@@ -419,6 +444,22 @@
     });
 }
 
+function buttonSortFragmentClick() {
+    var sortIndex = interfaceContext.sortFragmentsByScore();
+    var sliderBox = document.getElementById("slider-holder");
+    var nodes = audioEngineContext.audioObjects.filter(function (ao) {
+        return ao.specification.type !== "outside-reference";
+    });
+    var i;
+    nodes.forEach(function (ao) {
+        sliderBox.removeChild(ao.interfaceDOM.holder);
+    });
+    for (i = 0; i < nodes.length; i++) {
+        var j = sortIndex[i];
+        sliderBox.appendChild(nodes[j].interfaceDOM.holder);
+    }
+}
+
 function buttonSubmitClick() // TODO: Only when all songs have been played!
 {
     var checks = testState.currentStateMap.interfaces[0].options,
@@ -434,6 +475,9 @@
     if (interfaceContext.checkFragmentMinPlays() === false) {
         return;
     }
+    if (interfaceContext.checkCommentQuestions() === false) {
+        return;
+    }
 
     for (var i = 0; i < checks.length; i++) {
         var checkState = true;
diff -r cb227441a102 -r a8455b0766cd interfaces/mushra.css
--- a/interfaces/mushra.css	Wed Nov 28 13:50:22 2018 +0000
+++ b/interfaces/mushra.css	Wed Nov 28 13:51:51 2018 +0000
@@ -39,6 +39,8 @@
 }
 div.scale-text {
     position: absolute;
+    text-align: right;
+    min-width: 100px;
 }
 canvas#scale-canvas {
     position: relative;
diff -r cb227441a102 -r a8455b0766cd interfaces/mushra.js
--- a/interfaces/mushra.js	Wed Nov 28 13:50:22 2018 +0000
+++ b/interfaces/mushra.js	Wed Nov 28 13:51:51 2018 +0000
@@ -67,9 +67,20 @@
     submit.onclick = buttonSubmitClick;
     submit.id = 'submit-button';
     submit.style.display = 'inline-block';
+
+    // Create the sort button
+    var sort = document.createElement("button");
+    sort.id = "sort-fragments";
+    sort.textContent = "Sort";
+    sort.style.display = "inline-block";
+    sort.style.visibility = "hidden";
+    sort.onclick = buttonSortFragmentClick;
+
     // Append the interface buttons into the interfaceButtons object.
     interfaceButtons.appendChild(playback);
     interfaceButtons.appendChild(submit);
+    interfaceButtons.appendChild(sort);
+
 
     // Create outside reference holder
     var outsideRef = document.createElement("div");
@@ -206,6 +217,8 @@
 
 
     var interfaceOptions = interfaceObj.options;
+    var sortButton = document.getElementById("sort-fragments");
+    sortButton.style.visibility = "hidden";
     interfaceOptions.forEach(function (option) {
         if (option.type == "show") {
             switch (option.name) {
@@ -239,31 +252,8 @@
                     interfaceContext.commentBoxes.showCommentBoxes(feedbackHolder, true);
                     break;
                 case "fragmentSort":
-                    var button = document.getElementById('sort');
-                    if (button === null) {
-                        button = document.createElement("button");
-                        button.id = 'sort';
-                        button.textContent = "Sort";
-                        button.style.display = 'inline-block';
-                        var container = document.getElementById("interface-buttons");
-                        var neighbour = container.lastElementChild;
-                        container.appendChild(button);
-                        button.onclick = function () {
-                            var sortIndex = interfaceContext.sortFragmentsByScore();
-                            var sliderBox = document.getElementById("slider-holder");
-                            var nodes = audioEngineContext.audioObjects.filter(function (ao) {
-                                return ao.specification.type !== "outside-reference";
-                            });
-                            var i;
-                            nodes.forEach(function (ao) {
-                                sliderBox.removeChild(ao.interfaceDOM.holder);
-                            });
-                            for (i = 0; i < nodes.length; i++) {
-                                var j = sortIndex[i];
-                                sliderBox.appendChild(nodes[j].interfaceDOM.holder);
-                            }
-                        };
-                    }
+                    var button = document.getElementById('sort-fragments');
+                    button.style.visibility = "visible";
                     break;
             }
         }
@@ -480,6 +470,14 @@
 function drawScale() {
     var interfaceObj = testState.currentStateMap.interfaces[0];
     var scales = testState.currentStateMap.interfaces[0].scales;
+    var ticks = specification.interfaces.options.concat(interfaceObj.options).find(function (a) {
+        return (a.type == "show" && a.name == "ticks");
+    });
+    if (ticks !== undefined) {
+        ticks = true;
+    } else {
+        ticks = false;
+    }
     scales = scales.sort(function (a, b) {
         return a.position - b.position;
     });
@@ -495,11 +493,13 @@
     scales.forEach(function (scale) {
         var posPercent = scale.position / 100.0;
         var posPix = (1 - posPercent) * (draw_heights[1] - draw_heights[0]) + draw_heights[0];
-        ctx.fillStyle = "#000000";
-        ctx.setLineDash([1, 2]);
-        ctx.moveTo(0, posPix);
-        ctx.lineTo(width, posPix);
-        ctx.stroke();
+        if (ticks) {
+            ctx.fillStyle = "#000000";
+            ctx.setLineDash([1, 2]);
+            ctx.moveTo(0, posPix);
+            ctx.lineTo(width, posPix);
+            ctx.stroke();
+        }
         var text = document.createElement('div');
         text.align = "right";
         var textC = document.createElement('span');
@@ -508,11 +508,26 @@
         text.className = "scale-text";
         textHolder.appendChild(text);
         text.style.top = (posPix - 9) + 'px';
-        text.style.left = 100 - ($(text).width() + 3) + 'px';
         lastHeight = posPix;
     });
 }
 
+function buttonSortFragmentClick() {
+    var sortIndex = interfaceContext.sortFragmentsByScore();
+    var sliderBox = document.getElementById("slider-holder");
+    var nodes = audioEngineContext.audioObjects.filter(function (ao) {
+        return ao.specification.type !== "outside-reference";
+    });
+    var i;
+    nodes.forEach(function (ao) {
+        sliderBox.removeChild(ao.interfaceDOM.holder);
+    });
+    for (i = 0; i < nodes.length; i++) {
+        var j = sortIndex[i];
+        sliderBox.appendChild(nodes[j].interfaceDOM.holder);
+    }
+}
+
 function buttonSubmitClick() // TODO: Only when all songs have been played!
 {
     var checks = testState.currentStateMap.interfaces[0].options,
@@ -528,6 +543,9 @@
     if (interfaceContext.checkFragmentMinPlays() === false) {
         return;
     }
+    if (interfaceContext.checkCommentQuestions() === false) {
+        return;
+    }
 
     for (var i = 0; i < checks.length; i++) {
         var checkState = true;
diff -r cb227441a102 -r a8455b0766cd interfaces/timeline.js
--- a/interfaces/timeline.js	Wed Nov 28 13:50:22 2018 +0000
+++ b/interfaces/timeline.js	Wed Nov 28 13:51:51 2018 +0000
@@ -505,6 +505,9 @@
     if (interfaceContext.checkFragmentMinPlays() === false) {
         return;
     }
+    if (interfaceContext.checkCommentQuestions() === false) {
+        return;
+    }
     for (var i = 0; i < checks.length; i++) {
         var checkState = true;
         if (checks[i].type == 'check') {
diff -r cb227441a102 -r a8455b0766cd js/bootstrap.min.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/bootstrap.min.js	Wed Nov 28 13:51:51 2018 +0000
@@ -0,0 +1,7 @@
+/*!
+ * Bootstrap v3.3.7 (http://getbootstrap.com)
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under the MIT license
+ */
+if("undefined"==typeof jQuery)throw new Error("Bootstrap's JavaScript requires jQuery");+function(a){"use strict";var b=a.fn.jquery.split(" ")[0].split(".");if(b[0]<2&&b[1]<9||1==b[0]&&9==b[1]&&b[2]<1||b[0]>3)throw new Error("Bootstrap's JavaScript requires jQuery version 1.9.1 or higher, but lower than version 4")}(jQuery),+function(a){"use strict";function b(){var a=document.createElement("bootstrap"),b={WebkitTransition:"webkitTransitionEnd",MozTransition:"transitionend",OTransition:"oTransitionEnd otransitionend",transition:"transitionend"};for(var c in b)if(void 0!==a.style[c])return{end:b[c]};return!1}a.fn.emulateTransitionEnd=function(b){var c=!1,d=this;a(this).one("bsTransitionEnd",function(){c=!0});var e=function(){c||a(d).trigger(a.support.transition.end)};return setTimeout(e,b),this},a(function(){a.support.transition=b(),a.support.transition&&(a.event.special.bsTransitionEnd={bindType:a.support.transition.end,delegateType:a.support.transition.end,handle:function(b){if(a(b.target).is(this))return b.handleObj.handler.apply(this,arguments)}})})}(jQuery),+function(a){"use strict";function b(b){return this.each(function(){var c=a(this),e=c.data("bs.alert");e||c.data("bs.alert",e=new d(this)),"string"==typeof b&&e[b].call(c)})}var c='[data-dismiss="alert"]',d=function(b){a(b).on("click",c,this.close)};d.VERSION="3.3.7",d.TRANSITION_DURATION=150,d.prototype.close=function(b){function c(){g.detach().trigger("closed.bs.alert").remove()}var e=a(this),f=e.attr("data-target");f||(f=e.attr("href"),f=f&&f.replace(/.*(?=#[^\s]*$)/,""));var 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+this.activeTarget=b,this.clear();var c=this.selector+'[data-target="'+b+'"],'+this.selector+'[href="'+b+'"]',d=a(c).parents("li").addClass("active");d.parent(".dropdown-menu").length&&(d=d.closest("li.dropdown").addClass("active")),d.trigger("activate.bs.scrollspy")},b.prototype.clear=function(){a(this.selector).parentsUntil(this.options.target,".active").removeClass("active")};var d=a.fn.scrollspy;a.fn.scrollspy=c,a.fn.scrollspy.Constructor=b,a.fn.scrollspy.noConflict=function(){return a.fn.scrollspy=d,this},a(window).on("load.bs.scrollspy.data-api",function(){a('[data-spy="scroll"]').each(function(){var b=a(this);c.call(b,b.data())})})}(jQuery),+function(a){"use strict";function b(b){return this.each(function(){var d=a(this),e=d.data("bs.tab");e||d.data("bs.tab",e=new c(this)),"string"==typeof b&&e[b]()})}var c=function(b){this.element=a(b)};c.VERSION="3.3.7",c.TRANSITION_DURATION=150,c.prototype.show=function(){var b=this.element,c=b.closest("ul:not(.dropdown-menu)"),d=b.data("target");if(d||(d=b.attr("href"),d=d&&d.replace(/.*(?=#[^\s]*$)/,"")),!b.parent("li").hasClass("active")){var e=c.find(".active:last a"),f=a.Event("hide.bs.tab",{relatedTarget:b[0]}),g=a.Event("show.bs.tab",{relatedTarget:e[0]});if(e.trigger(f),b.trigger(g),!g.isDefaultPrevented()&&!f.isDefaultPrevented()){var h=a(d);this.activate(b.closest("li"),c),this.activate(h,h.parent(),function(){e.trigger({type:"hidden.bs.tab",relatedTarget:b[0]}),b.trigger({type:"shown.bs.tab",relatedTarget:e[0]})})}}},c.prototype.activate=function(b,d,e){function f(){g.removeClass("active").find("> .dropdown-menu > .active").removeClass("active").end().find('[data-toggle="tab"]').attr("aria-expanded",!1),b.addClass("active").find('[data-toggle="tab"]').attr("aria-expanded",!0),h?(b[0].offsetWidth,b.addClass("in")):b.removeClass("fade"),b.parent(".dropdown-menu").length&&b.closest("li.dropdown").addClass("active").end().find('[data-toggle="tab"]').attr("aria-expanded",!0),e&&e()}var g=d.find("> .active"),h=e&&a.support.transition&&(g.length&&g.hasClass("fade")||!!d.find("> .fade").length);g.length&&h?g.one("bsTransitionEnd",f).emulateTransitionEnd(c.TRANSITION_DURATION):f(),g.removeClass("in")};var d=a.fn.tab;a.fn.tab=b,a.fn.tab.Constructor=c,a.fn.tab.noConflict=function(){return a.fn.tab=d,this};var e=function(c){c.preventDefault(),b.call(a(this),"show")};a(document).on("click.bs.tab.data-api",'[data-toggle="tab"]',e).on("click.bs.tab.data-api",'[data-toggle="pill"]',e)}(jQuery),+function(a){"use strict";function b(b){return this.each(function(){var d=a(this),e=d.data("bs.affix"),f="object"==typeof b&&b;e||d.data("bs.affix",e=new c(this,f)),"string"==typeof b&&e[b]()})}var c=function(b,d){this.options=a.extend({},c.DEFAULTS,d),this.$target=a(this.options.target).on("scroll.bs.affix.data-api",a.proxy(this.checkPosition,this)).on("click.bs.affix.data-api",a.proxy(this.checkPositionWithEventLoop,this)),this.$element=a(b),this.affixed=null,this.unpin=null,this.pinnedOffset=null,this.checkPosition()};c.VERSION="3.3.7",c.RESET="affix affix-top affix-bottom",c.DEFAULTS={offset:0,target:window},c.prototype.getState=function(a,b,c,d){var e=this.$target.scrollTop(),f=this.$element.offset(),g=this.$target.height();if(null!=c&&"top"==this.affixed)return e<c&&"top";if("bottom"==this.affixed)return null!=c?!(e+this.unpin<=f.top)&&"bottom":!(e+g<=a-d)&&"bottom";var h=null==this.affixed,i=h?e:f.top,j=h?g:b;return null!=c&&e<=c?"top":null!=d&&i+j>=a-d&&"bottom"},c.prototype.getPinnedOffset=function(){if(this.pinnedOffset)return this.pinnedOffset;this.$element.removeClass(c.RESET).addClass("affix");var a=this.$target.scrollTop(),b=this.$element.offset();return this.pinnedOffset=b.top-a},c.prototype.checkPositionWithEventLoop=function(){setTimeout(a.proxy(this.checkPosition,this),1)},c.prototype.checkPosition=function(){if(this.$element.is(":visible")){var b=this.$element.height(),d=this.options.offset,e=d.top,f=d.bottom,g=Math.max(a(document).height(),a(document.body).height());"object"!=typeof d&&(f=e=d),"function"==typeof e&&(e=d.top(this.$element)),"function"==typeof f&&(f=d.bottom(this.$element));var h=this.getState(g,b,e,f);if(this.affixed!=h){null!=this.unpin&&this.$element.css("top","");var i="affix"+(h?"-"+h:""),j=a.Event(i+".bs.affix");if(this.$element.trigger(j),j.isDefaultPrevented())return;this.affixed=h,this.unpin="bottom"==h?this.getPinnedOffset():null,this.$element.removeClass(c.RESET).addClass(i).trigger(i.replace("affix","affixed")+".bs.affix")}"bottom"==h&&this.$element.offset({top:g-b-f})}};var d=a.fn.affix;a.fn.affix=b,a.fn.affix.Constructor=c,a.fn.affix.noConflict=function(){return a.fn.affix=d,this},a(window).on("load",function(){a('[data-spy="affix"]').each(function(){var c=a(this),d=c.data();d.offset=d.offset||{},null!=d.offsetBottom&&(d.offset.bottom=d.offsetBottom),null!=d.offsetTop&&(d.offset.top=d.offsetTop),b.call(c,d)})})}(jQuery);
\ No newline at end of file
diff -r cb227441a102 -r a8455b0766cd js/core.js
--- a/js/core.js	Wed Nov 28 13:50:22 2018 +0000
+++ b/js/core.js	Wed Nov 28 13:51:51 2018 +0000
@@ -1,6 +1,6 @@
 /**
  * core.js
- * 
+ *
  * Main script to run, calls all other core functions and manages loading/store to backend.
  * Also contains all global variables.
  */
@@ -44,6 +44,17 @@
     return el.firstChild.href;
 }
 
+function insertParam(s, key, value)
+{
+    key = encodeURI(key); value = encodeURI(value);
+    if (s.split("?").length == 1) {
+        s = s + ">";
+    } else {
+        s = s + "&";
+    }
+    return s+key+"="+value;
+}
+
 // Firefox does not have an XMLDocument.prototype.getElementsByName
 // and there is no searchAll style command, this custom function will
 // search all children recusrively for the name. Used for XSD where all
@@ -146,11 +157,12 @@
     // Create the specification object
     specification = new Specification();
 
+    // Create the storage object
+    storage = new Storage();
+
     // Create the interface object
     interfaceContext = new Interface(specification);
 
-    // Create the storage object
-    storage = new Storage();
     // Define window callbacks for interface
     window.onresize = function (event) {
         interfaceContext.resizeWindow(event);
@@ -174,6 +186,9 @@
                 case "returnURL":
                     gReturnURL = value;
                     break;
+                case "testKey":
+                    storage.sessionLinked = value;
+                    break;
                 case "saveFilenamePrefix":
                     storage.filenamePrefix = value;
                     break;
@@ -417,7 +432,7 @@
         storage.SessionKey.finish().then(function (resolved) {
             var converter = new showdown.Converter();
             if (typeof specification.returnURL == "string" && specification.returnURL.length > 0) {
-                window.location = specification.returnURL;
+                window.location = insertParam(specification.returnURL, "testKey", storage.SessionKey.key);
             } else {
                 popup.popupContent.innerHTML = converter.makeHtml(specification.exitText);
             }
@@ -1145,8 +1160,7 @@
 
     this.proceedClicked = function () {
         // Each time the popup button is clicked!
-        if (testState.stateIndex === 0 && specification.calibration) {
-            interfaceContext.calibrationModuleObject.collect();
+        if (testState.stateIndex === -1 && specification.calibration) {
             advanceState();
             return;
         }
@@ -1362,14 +1376,18 @@
                 this.advanceState();
             }
         } else if (this.stateIndex == -1) {
-            this.stateIndex++;
-            if (specification.calibration) {
+            if (interfaceContext.calibrationTests.checkFrequencies) {
                 popup.showPopup();
-                popup.popupTitle.textContent = "Calibration. Set the levels so all tones are of equal amplitude. Move your mouse over the sliders to hear the tones. The red slider is the reference tone";
-                interfaceContext.calibrationModuleObject = new interfaceContext.calibrationModule();
-                interfaceContext.calibrationModuleObject.build(popup.popupResponse);
+                popup.popupTitle.textContent = "Set the levels so all tones are of equal amplitude. Move your mouse over the sliders to hear the tones. The red slider is the reference tone";
+                interfaceContext.calibrationTests.performFrequencyCheck(popup.popupResponse);
+                popup.hidePreviousButton();
+            } else if (interfaceContext.calibrationTests.checkChannels) {
+                popup.showPopup();
+                popup.popupTitle.textContent = "Click play to start the audio, the click the button corresponding to where the sound appears to be coming from.";
+                interfaceContext.calibrationTests.performChannelCheck(popup.popupResponse);
                 popup.hidePreviousButton();
             } else {
+                this.stateIndex++;
                 this.advanceState();
             }
         } else if (this.stateIndex == this.stateMap.length) {
@@ -2221,10 +2239,19 @@
     };
 
     this.moved = function (time, position) {
+        var last;
         if (time > 0) {
             this.wasMoved = true;
         }
-        this.movementTracker[this.movementTracker.length] = [time, position];
+        // Get the last entry
+        if (this.movementTracker.length > 0) {
+            last = this.movementTracker[this.movementTracker.length - 1];
+        } else {
+            last = -1;
+        }
+        if (position != last[1]) {
+            this.movementTracker[this.movementTracker.length] = [time, position];
+        }
     };
 
     this.startListening = function (time) {
@@ -2425,6 +2452,9 @@
                 function trackCommentFocus() {
                     return document.activeElement.className.indexOf("trackComment") >= 0;
                 }
+                if (testState.currentStatePosition != "test") {
+                    return;
+                }
                 if (trackCommentFocus()) {
                     return;
                 }
@@ -2436,7 +2466,6 @@
                 } else {
                     keypress.call(this, e.key);
                 }
-                console.log(e);
             }
         };
         document.addEventListener("keydown", keyboardInterfaceController, false);
@@ -2488,7 +2517,7 @@
     this.returnDateNode = function () {
         // Create an XML Node for the Date and Time a test was conducted
         // Structure is
-        // <datetime> 
+        // <datetime>
         //	<date year="##" month="##" day="##">DD/MM/YY</date>
         //	<time hour="##" minute="##" sec="##">HH:MM:SS</time>
         // </datetime>
@@ -2721,6 +2750,12 @@
             this.textArea.style.width = boxwidth - 6 + "px";
         };
         this.resize();
+        this.check = function () {
+            if (this.specification.mandatory && this.textArea.value.length === 0) {
+                return false;
+            }
+            return true;
+        };
     };
 
     this.radioBox = function (commentQuestion) {
@@ -2795,6 +2830,15 @@
             }
             this.holder.style.width = boxwidth + "px";
         };
+        this.check = function () {
+            var anyChecked = this.options.some(function (a) {
+                return a.checked;
+            });
+            if (this.specification.mandatory && anyChecked === false) {
+                return false;
+            }
+            return true;
+        };
         this.resize();
     };
 
@@ -2861,6 +2905,15 @@
             }
             this.holder.style.width = boxwidth + "px";
         };
+        this.check = function () {
+            var anyChecked = this.options.some(function (a) {
+                return a.checked;
+            });
+            if (this.specification.mandatory && anyChecked === false) {
+                return false;
+            }
+            return true;
+        };
         this.resize();
     };
 
@@ -2918,6 +2971,9 @@
             this.holder.style.width = boxwidth + "px";
             this.slider.style.width = boxwidth - 24 + "px";
         };
+        this.check = function () {
+            return true;
+        };
         this.resize();
     };
 
@@ -2940,6 +2996,19 @@
         this.commentQuestions = [];
     };
 
+    this.checkCommentQuestions = function () {
+        var errored = this.commentQuestions.reduce(function (a, cq) {
+            if (cq.check() === false) {
+                a.push(cq);
+            }
+            return a;
+        }, []);
+        if (errored.length === 0) {
+            return true;
+        }
+        interfaceContext.lightbox.post("Message", "Not all the mandatory comment boxes below have been filled.");
+    };
+
     this.outsideReferenceDOM = function (audioObject, index, inject) {
         this.parent = audioObject;
         this.outsideReferenceHolder = document.createElement('button');
@@ -3171,93 +3240,200 @@
         return imageController;
     })();
 
-    this.calibrationModuleObject = null;
-    this.calibrationModule = function () {
-        // This creates an on-page calibration module
-        this.storeDOM = storage.document.createElement("calibration");
-        storage.root.appendChild(this.storeDOM);
-        // The calibration is a fixed state module
-        this.calibrationNodes = [];
-        this.holder = null;
-        this.build = function (inject) {
-            var f0 = 62.5;
-            this.holder = document.createElement("div");
-            this.holder.className = "calibration-holder";
-            this.calibrationNodes = [];
-            while (f0 < 20000) {
-                /* jshint loopfunc: true */
-                var obj = {
-                    root: document.createElement("div"),
-                    input: document.createElement("input"),
-                    oscillator: audioContext.createOscillator(),
-                    gain: audioContext.createGain(),
-                    f: f0,
-                    parent: this,
-                    handleEvent: function (event) {
-                        switch (event.type) {
-                            case "mouseenter":
-                                this.oscillator.start(0);
-                                break;
-                            case "mouseleave":
-                                this.oscillator.stop(0);
-                                this.oscillator = audioContext.createOscillator();
-                                this.oscillator.connect(this.gain);
-                                this.oscillator.frequency.value = this.f;
-                                break;
-                            case "mousemove":
-                                var value = Math.pow(10, this.input.value / 20);
-                                if (this.f == 1000) {
-                                    audioEngineContext.outputGain.gain.value = value;
-                                    interfaceContext.volume.slider.value = this.input.value;
-                                } else {
-                                    this.gain.gain.value = value;
+    this.calibrationTests = (function () {
+        function readonly(t) {
+            throw ("Cannot set read-only variable");
+        }
+
+        function getStorageRoot() {
+            var storageRoot = storage.root.querySelector("calibration");
+            if (storageRoot === undefined) {
+                storageRoot = storage.document.createElement("calibration");
+                storage.root.appendChild(storageRoot);
+            }
+            return storageRoot;
+        }
+        var calibrationObject,
+            _checkedFrequency = false,
+            _checkedChannels = false;
+
+        // Define the checkFrequencies test!
+        var checkFrequencyUnit = function (htmlRoot, storageRoot) {
+
+            function createFrequencyElement(frequency) {
+                return (function (frequency) {
+                    var hold = document.createElement("div");
+                    hold.className = "calibration-slider";
+                    var range = document.createElement("input");
+                    range.type = "range";
+                    range.min = "-24";
+                    range.max = "24";
+                    range.step = "0.5";
+                    range.setAttribute("orient", "vertical");
+                    range.value = (Math.random() - 0.5) * 24;
+                    range.setAttribute("frequency", frequency);
+                    hold.appendChild(range);
+                    htmlRoot.appendChild(hold);
+
+                    var gain = audioContext.createGain();
+                    gain.connect(outputGain);
+                    gain.gain.value = Math.pow(10, Number(range.value) / 20.0);
+                    var osc;
+
+                    var store = storage.document.createElement("response");
+                    store.setAttribute("frequency", frequency);
+                    storageHook.appendChild(store);
+                    var interface = {};
+                    Object.defineProperties(interface, {
+                        "handleEvent": {
+                            "value": function (e) {
+                                if (e.type == "mouseenter") {
+                                    osc = audioContext.createOscillator();
+                                    osc.frequency.value = frequency;
+                                    osc.connect(gain);
+                                    osc.start();
+                                    console.log("start " + frequency);
+                                } else if (e.type == "mouseleave") {
+                                    console.log("stop " + frequency);
+                                    osc.stop();
+                                    osc = undefined;
                                 }
-                                break;
+                                store.textContent = e.currentTarget.value;
+                                gain.gain.value = Math.pow(10, Number(e.currentTarget.value) / 20.0);
+                            }
                         }
-                    },
-                    disconnect: function () {
-                        this.gain.disconnect();
+                    });
+                    range.addEventListener("mousemove", interface);
+                    range.addEventListener("mouseenter", interface);
+                    range.addEventListener("mouseleave", interface);
+                    return interface;
+                })(frequency);
+            }
+            var htmlHook = document.createElement("div");
+            htmlRoot.appendChild(htmlHook);
+            var storageHook = storage.document.createElement("frequency");
+            storageRoot.appendChild(storageHook);
+            var frequencies = [100, 200, 400, 800, 1200, 1600, 2000, 4000, 8000, 12000];
+            var outputGain = audioContext.createGain();
+            outputGain.gain.value = 0.25;
+            outputGain.connect(audioContext.destination);
+            this.sliders = frequencies.map(createFrequencyElement);
+        };
+
+        var checkChannelsUnit = function (htmlRoot, storageRoot) {
+
+            function onclick(ev) {
+                var storageHook = storage.document.querySelector("calibration").querySelector("channels");
+                storageHook.setAttribute("selected", ev.currentTarget.value);
+                storageHook.setAttribute("selectedText", ev.currentTarget.textContent);
+                osc.stop();
+                gainL = undefined;
+                gainR = undefined;
+                cmerge = undefined;
+                popup.proceedClicked();
+            }
+            var osc = audioContext.createOscillator();
+            var gainL = audioContext.createGain();
+            var gainR = audioContext.createGain();
+            gainL.channelCount = 1;
+            gainR.channelCount = 1;
+            var cmerge = audioContext.createChannelMerger(2);
+            osc.connect(gainL, 0, 0);
+            osc.connect(gainR, 0, 0);
+            gainL.connect(cmerge, 0, 0);
+            gainR.connect(cmerge, 0, 1);
+            cmerge.connect(audioContext.destination);
+            var play = document.createElement("button");
+            play.textContent = "Play Audio";
+            play.onclick = function () {
+                osc.start();
+                play.disabled = true;
+            };
+            play.className = "calibration-button";
+            htmlRoot.appendChild(play);
+            var choiceHolder = document.createElement("div");
+            var leftButton = document.createElement("button");
+            leftButton.textContent = "Left";
+            leftButton.value = "-1";
+            leftButton.className = "calibration-button";
+            var centerButton = document.createElement("button");
+            centerButton.textContent = "Middle";
+            centerButton.value = "0";
+            centerButton.className = "calibration-button";
+            var rightButton = document.createElement("button");
+            rightButton.textContent = "Right";
+            rightButton.value = "1";
+            rightButton.className = "calibration-button";
+            choiceHolder.appendChild(leftButton);
+            choiceHolder.appendChild(centerButton);
+            choiceHolder.appendChild(rightButton);
+            htmlRoot.appendChild(choiceHolder);
+            leftButton.addEventListener("click", onclick);
+            centerButton.addEventListener("click", onclick);
+            rightButton.addEventListener("click", onclick);
+
+            var storageHook = storage.document.createElement("channels");
+            storageRoot.appendChild(storageHook);
+
+            var pan;
+            if (Math.random() > 0.5) {
+                pan = 1;
+                gainL.gain.value = 0.0;
+                gainR.gain.value = 0.25;
+                storageHook.setAttribute("presented", pan);
+                storageHook.setAttribute("presentedText", "Right");
+            } else {
+                pan = -1;
+                gainL.gain.value = 0.25;
+                gainR.gain.value = 0.0;
+                storageHook.setAttribute("presented", pan);
+                storageHook.setAttribute("presentedText", "Left");
+            }
+        };
+
+        var interface = {};
+        Object.defineProperties(interface, {
+            "calibrationObject": {
+                "get": function () {
+                    return calibrationObject;
+                },
+                "set": readonly
+            },
+            "checkFrequencies": {
+                "get": function () {
+                    if (specification.calibration.checkFrequencies && _checkedFrequency === false) {
+                        return true;
                     }
-                };
-                obj.root.className = "calibration-slider";
-                obj.root.appendChild(obj.input);
-                obj.oscillator.connect(obj.gain);
-                obj.gain.connect(audioEngineContext.outputGain);
-                obj.gain.gain.value = Math.random() * 2;
-                obj.input.value = obj.gain.gain.value;
-                obj.input.setAttribute('orient', 'vertical');
-                obj.input.type = "range";
-                obj.input.min = -12;
-                obj.input.max = 0;
-                obj.input.step = 0.25;
-                if (f0 != 1000) {
-                    obj.input.value = (Math.random() * 12) - 6;
-                } else {
-                    obj.input.value = 0;
-                    obj.root.style.backgroundColor = "rgb(255,125,125)";
+                    return false;
+                },
+                "set": readonly
+            },
+            "checkChannels": {
+                "get": function () {
+                    if (specification.calibration.checkChannels && _checkedChannels === false) {
+                        return true;
+                    }
+                    return false;
+                },
+                "set": readonly
+            },
+            "performFrequencyCheck": {
+                "value": function (htmlRoot) {
+                    htmlRoot.innerHTML = "";
+                    calibrationObject = new checkFrequencyUnit(htmlRoot, getStorageRoot());
+                    _checkedFrequency = true;
                 }
-                obj.input.addEventListener("mousemove", obj);
-                obj.input.addEventListener("mouseenter", obj);
-                obj.input.addEventListener("mouseleave", obj);
-                obj.gain.gain.value = Math.pow(10, obj.input.value / 20);
-                obj.oscillator.frequency.value = f0;
-                this.calibrationNodes.push(obj);
-                this.holder.appendChild(obj.root);
-                f0 *= 2;
+            },
+            "performChannelCheck": {
+                "value": function (htmlRoot) {
+                    htmlRoot.innerHTML = "";
+                    calibrationObject = new checkChannelsUnit(htmlRoot, getStorageRoot());
+                    _checkedChannels = true;
+                }
             }
-            inject.appendChild(this.holder);
-        };
-        this.collect = function () {
-            this.calibrationNodes.forEach(function (obj) {
-                var node = storage.document.createElement("calibrationresult");
-                node.setAttribute("frequency", obj.f);
-                node.setAttribute("range-min", obj.input.min);
-                node.setAttribute("range-max", obj.input.max);
-                node.setAttribute("gain-lin", obj.gain.gain.value);
-                this.storeDOM.appendChild(node);
-            }, this);
-        };
-    };
+        });
+        return interface;
+    })();
 
 
     // Global Checkers
@@ -3626,6 +3802,7 @@
     this.document = null;
     this.root = null;
     this.state = 0;
+    var linkedID = undefined;
     var pFilenamePrefix = "save";
 
     this.initialise = function (existingStore) {
@@ -3651,6 +3828,9 @@
         if (specification.postTest !== undefined) {
             this.globalPostTest = new this.surveyNode(this, this.root, specification.postTest);
         }
+        if (linkedID) {
+            this.root.setAttribute("linked", linkedID);
+        }
     };
 
     this.SessionKey = (function (parent) {
@@ -3658,13 +3838,17 @@
         if (window.returnURL !== undefined) {
             returnURL = String(window.returnURL);
         }
+        
+        var chainCount = 0;
+        var chainPosition = chainCount;
 
         function postUpdate() {
-            // Return a new promise.
-            var hold = document.createElement("div");
-            var clone = parent.root.cloneNode(true);
-            hold.appendChild(clone);
             return new Promise(function (resolve, reject) {
+                // Return a new promise.
+                chainPosition+=1;
+                var hold = document.createElement("div");
+                var clone = parent.root.cloneNode(true);
+                hold.appendChild(clone);
                 // Do the usual XHR stuff
                 console.log("Requested save...");
                 var req = new XMLHttpRequest();
@@ -3698,7 +3882,12 @@
                 };
 
                 // Make the request
-                req.send([hold.innerHTML]);
+                if (chainCount > chainPosition) {
+                    // We have items downstream that will upload for us
+                    resolve(true);
+                } else {
+                    req.send([hold.innerHTML]);
+                }
             });
         }
 
@@ -3779,9 +3968,10 @@
             },
             "update": {
                 "value": function () {
-                    if (this.key === null || requestChains === undefined) {
-                        throw ("Cannot save as key == null");
+                    if (requestChains === undefined) {
+                        throw ("Initiate key exchange first");
                     }
+                    chainCount += 1;
                     this.parent.root.setAttribute("state", "update");
                     requestChains = requestChains.then(postUpdate);
                 }
@@ -3794,6 +3984,7 @@
                     this.parent.finish();
                     return requestChains.then(postUpdate()).then(function () {
                         console.log("OK");
+                        return true;
                     }, function () {
                         createProjectSave("local");
                     });
@@ -4048,6 +4239,20 @@
                 pFilenamePrefix = value;
                 return value;
             }
+        },
+        "sessionLinked": {
+            'get': function () {
+                return linkedID;
+            },
+            'set': function(s) {
+                if (typeof s == "string") {
+                    linkedID = s;
+                    if (this.root) {
+                        this.root.setAttribute("linked", s);
+                    }
+                }
+                return linkedID;
+            }
         }
     });
 }
diff -r cb227441a102 -r a8455b0766cd js/min/core.min.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/min/core.min.js	Wed Nov 28 13:51:51 2018 +0000
@@ -0,0 +1,1 @@
+function escapeHTML(e){return e.split("&").join("&amp;").split("<").join("&lt;").split('"').join("&quot;")}function qualifyURL(e){var t=document.createElement("div");return t.innerHTML='<a href="'+escapeHTML(e)+'">x</a>',t.firstChild.href}function loadProjectSpec(e){var t=new XMLHttpRequest;t.open("GET","xml/test-schema.xsd",!0),t.onload=function(){specification.processSchema(t.response);var i=new XMLHttpRequest;i.open("GET",e,!0),i.onload=function(){loadProjectSpecCallback(i.response)},i.onerror=function(){document.getElementsByTagName("body")[0].innerHTML=null;var e=document.createElement("h3");e.textContent="FATAL ERROR";var t=document.createElement("p");t.textContent="There was an error when loading your XML file. Please check your path in the URL. After the path to this page, there should be '?url=path/to/your/file.xml'. Check the spelling of your filename as well. If you are still having issues, check the log of the python server or your webserver distribution for 404 codes for your file.",document.getElementsByTagName("body")[0].appendChild(e),document.getElementsByTagName("body")[0].appendChild(t)},i.send()},t.send()}function loadProjectSpecCallback(e){var t,i,n=(new DOMParser).parseFromString(e,"text/xml"),o=n.getElementsByTagName("parsererror");if(o.length>=1)return t=document.createElement("h3"),t.textContent="FATAL ERROR",i=document.createElement("span"),i.textContent="The XML parser returned the following errors when decoding your XML file",document.getElementsByTagName("body")[0].innerHTML=null,document.getElementsByTagName("body")[0].appendChild(t),document.getElementsByTagName("body")[0].appendChild(i),void document.getElementsByTagName("body")[0].appendChild(o[0]);if(void 0===n||void 0===n.firstChild)return t=document.createElement("h3"),t.textContent="FATAL ERROR",i=document.createElement("span"),i.textContent="The project XML was not decoded properly, try refreshing your browser and clearing caches. If the problem persists, contact the test creator.",document.getElementsByTagName("body")[0].innerHTML=null,document.getElementsByTagName("body")[0].appendChild(t),void document.getElementsByTagName("body")[0].appendChild(i);if("waet"==n.firstChild.nodeName){var s={xml:e,schema:specification.getSchemaString(),arguments:["--noout","--schema","test-schema.xsd","document.xml"]};projectXML=n;var r=validateXML(s);if(console.log(r),"document.xml validates\n"!=r){document.getElementsByTagName("body")[0].innerHTML=null,(t=document.createElement("h3")).textContent="FATAL ERROR",(i=document.createElement("h4")).textContent="The XML validator returned the following errors when decoding your XML file",document.getElementsByTagName("body")[0].appendChild(t),document.getElementsByTagName("body")[0].appendChild(i),r=r.split("\n");for(var a in r)document.getElementsByTagName("body")[0].appendChild(document.createElement("br")),(i=document.createElement("span")).textContent=r[a],document.getElementsByTagName("body")[0].appendChild(i);return}specification.decode(projectXML),storage.initialise()}else if("waetresult"==n.firstChild.nodeName){(projectXML=document.implementation.createDocument(null,"waet")).firstChild.appendChild(n.getElementsByTagName("waet")[0].getElementsByTagName("setup")[0].cloneNode(!0));for(var c,l=n.firstChild.firstChild;null!==l;){if("survey"==l.nodeName)if("complete"==l.getAttribute("state"))for(var u=l.getAttribute("location"),h=projectXML.getElementsByTagName("setup")[0].getElementsByTagName("survey")[0];null!==h;){if("pre"==u||"before"==u){if("pre"==h.getAttribute("location")||"before"==h.getAttribute("location")){projectXML.getElementsByTagName("setup")[0].removeChild(h);break}}else if("post"==h.getAttribute("location")||"after"==h.getAttribute("location")){projectXML.getElementsByTagName("setup")[0].removeChild(h);break}h=h.nextElementSibling}else c=l,l=l.previousElementSibling,n.firstChild.removeChild(c);else"page"==l.nodeName&&"empty"==l.getAttribute("state")&&(projectXML.firstChild.appendChild(n.getElementById(l.getAttribute("ref")).cloneNode(!0)),c=l,l=l.previousElementSibling,n.firstChild.removeChild(c));l=l.nextElementSibling}specification.decode(projectXML),storage.initialise(n)}if(isFinite(specification.sampleRate)&&Number(specification.sampleRate)!=audioContext.sampleRate){var p="Sample rates do not match! Requested "+Number(specification.sampleRate)+", got "+audioContext.sampleRate+". Please set the sample rate to match before completing this test.";interfaceContext.lightbox.post("Error",p)}else{var d=new XMLHttpRequest;d.open("GET","interfaces/interfaces.json"),d.onerror=function(e){throw e},d.onload=function(){if(200!==d.status)throw new Error(d.status);var e=specification.interface,t=document.getElementsByTagName("head")[0],i=JSON.parse(d.responseText).interfaces.find(function(t){return t.name==e});if(!i)throw"Cannot load desired interface";i.scripts.forEach(function(e){var i=document.createElement("script");i.setAttribute("type","text/javascript"),i.setAttribute("src",e),t.appendChild(i)}),i.css.forEach(function(e){var i=document.createElement("link");i.setAttribute("rel","stylesheet"),i.setAttribute("type","text/css"),i.setAttribute("href",e),t.appendChild(i)})},d.send(),void 0!==gReturnURL&&(console.log("returnURL Overide from "+specification.returnURL+" to "+gReturnURL),specification.returnURL=gReturnURL),void 0!==gSaveFilenamePrefix&&(specification.saveFilenamePrefix=gSaveFilenamePrefix),audioEngineContext=new AudioEngine(specification)}}function createProjectSave(e){window.onbeforeunload=null;var t=storage.finish(),i=document.createElement("div");i.appendChild(t);var n=[i.innerHTML];if("local"==e){var o=new Blob(n,{type:"application/xml"}),s=window.URL.createObjectURL(o),r=document.createElement("a");r.hidden="",r.href=s,r.download="save.xml",r.textContent="Save File",popup.showPopup(),popup.popupContent.innerHTML="<span>Please save the file below to give to your test supervisor</span><br>",popup.popupContent.appendChild(r)}else{"string"==typeof specification.projectReturn&&"http"==specification.projectReturn.substr(0,4)&&specification.projectReturn,storage.SessionKey.finish().then(function(e){"string"==typeof specification.returnURL&&specification.returnURL.length>0?window.location=specification.returnURL:popup.popupContent.textContent=specification.exitText},function(e){console.log("Save: Error! "+e.textContent),createProjectSave("local")}),popup.showPopup(),popup.popupContent.innerHTML=null,popup.popupContent.textContent="Submitting. Please Wait","function"==typeof popup.hideNextButton&&popup.hideNextButton(),"function"==typeof popup.hidePreviousButton&&popup.hidePreviousButton()}}function errorSessionDump(e){popup.showPopup(),popup.popupContent.innerHTML=null;var t=document.createElement("error"),i=document.createElement("div");"object"==typeof e?(t.appendChild(e),popup.popupContent.appendChild(e)):(t.textContent=e,popup.popupContent.innerHTML="ERROR : "+e);var n=interfaceXMLSave();n.appendChild(t),i.appendChild(n);var o=[i.innerHTML],s=new Blob(o,{type:"application/xml"}),r=window.URL.createObjectURL(s),a=document.createElement("a");a.hidden="",a.href=r,a.download="save.xml",a.textContent="Save File",popup.popupContent.appendChild(a)}function interfaceXMLSave(){return storage.finish()}function linearToDecibel(e){return 20*Math.log10(e)}function decibelToLinear(e){return Math.pow(10,e/20)}function secondsToSamples(e,t){return Math.round(e*t)}function samplesToSeconds(e,t){return e/t}function randomString(e){for(var t="",i=0;i<e;i+=2){t+=Math.floor(1295*Math.random()).toString(36)}return t}function randomiseOrder(e){for(var t=e.length,i=[],n=0;n<t;++n)i.push(n);for(var o=i.slice(0),s=[],r=[],a=0;a<t;a++){var c=Math.random();c=Math.floor(c*e.length),s.push(e.splice(c,1)[0]),r.push(i.splice(c,1)[0])}return console.log(o.toString()),console.log(r.toString()),s}function randomSubArray(e,t){t>e.length&&(t=e.length);for(var i=[];t>0;){var n=Math.floor(Math.random()*e.length);i.push(e.splice(n,1)[0]),t--}return i}function interfacePopup(){function e(e,r){function a(e){var t=this.popupOptions.findIndex(function(t,i,n){return t.specification.id==e},this);this.currentIndex=t-1}var c;if("question"===e.specification.type)c=t;else if("checkbox"===e.specification.type)c=i;else if("radio"===e.specification.type)c=n;else if("number"===e.specification.type)c=o;else{if("slider"!==e.specification.type)return;c=s}for(var l=0;l<e.specification.conditions.length;l++){var u,h=e.specification.conditions[l];if(null!==(u=c(h,r)?h.jumpToOnPass:h.jumpToOnFail)){a.call(this,u);break}}}function t(e,t){switch(e.check){case"equals":if(t==e.value)return!0;break;case"greaterThan":case"lessThan":console.log("Survey Element of type 'question' cannot interpret greaterThan/lessThan conditions. IGNORING");break;case"contains":if(t.includes(e.value))return!0}return!1}function i(e,t){switch(e.check){case"contains":for(var i=0;i<t.length;i++){var n=t[i];if(n.name===e.value&&n.checked)return!0}break;case"equals":case"greaterThan":case"lessThan":console.log("Survey Element of type 'checkbox' cannot interpret equals/greaterThan/lessThan conditions. IGNORING");break;default:console.log("Unknown condition. IGNORING")}return!1}function n(e,t){switch(e.check){case"equals":if(t===e.value)return!0;break;case"contains":case"greaterThan":case"lessThan":console.log("Survey Element of type 'radio' cannot interpret contains/greaterThan/lessThan conditions. IGNORING");break;default:console.log("Unknown condition. IGNORING")}return!1}function o(e,t){var i=i;switch(i.check){case"greaterThan":if(t>Number(i.value))return!0;break;case"lessThan":if(t<Number(i.value))return!0;break;case"equals":if(t==i.value)return!0;break;case"contains":console.log("Survey Element of type 'number' cannot interpret \"contains\" conditions. IGNORING");break;default:console.log("Unknown condition. IGNORING")}return!1}function s(e,t){switch(e.check){case"contains":console.log("Survey Element of type 'number' cannot interpret contains conditions. IGNORING");break;case"greaterThan":if(t>Number(e.value))return!0;break;case"lessThan":if(t<Number(e.value))return!0;break;case"equals":if(t==e.value)return!0;break;default:console.log("Unknown condition. IGNORING")}return!1}this.popup=null,this.popupContent=null,this.popupTitle=null,this.popupResponse=null,this.buttonProceed=null,this.buttonPrevious=null,this.popupOptions=null,this.currentIndex=null,this.node=null,this.store=null;var r;$(window).keypress(function(e){13==e.keyCode&&"visible"==popup.popup.style.visibility&&!1===interfaceContext.lightbox.isVisible()&&(console.log(e),popup.buttonProceed.onclick(),e.preventDefault())}),this.createPopup=function(){document.getElementById("topLevelBody");this.popup=document.getElementById("popupHolder"),this.popup.style.left=window.innerWidth/2-250+"px",this.popup.style.top=window.innerHeight/2-125+"px",this.popupContent=document.getElementById("popupContent"),this.popupTitle=document.getElementById("popupTitleHolder"),this.popupResponse=document.getElementById("popupResponse"),this.buttonProceed=document.getElementById("popup-proceed"),this.buttonProceed.onclick=function(){popup.proceedClicked()},this.buttonPrevious=document.getElementById("popup-previous"),this.buttonPrevious.onclick=function(){popup.previousClick()},this.hidePopup(),this.popup.style.visibility="hidden"},this.showPopup=function(){null===this.popup&&this.createPopup(),this.popup.style.visibility="visible";document.getElementsByClassName("testHalt")[0].style.visibility="visible",this.popupResponse.style.left="0%"},this.hidePopup=function(){if(this.popup){this.popup.style.visibility="hidden";document.getElementsByClassName("testHalt")[0].style.visibility="hidden",this.buttonPrevious.style.visibility="inherit"}},this.postNode=function(){var e=this.popupOptions[this.currentIndex],t=new showdown.Converter,i=new DOMParser;r=new Date,this.popupResponse.innerHTML="",this.popupTitle.innerHTML="";var n=e.specification.statement.split("\n");n.forEach(function(e,t,i){i[t]=e.trim()}),e.specification.statement=n.join("\n");for(var o=i.parseFromString(t.makeHtml(e.specification.statement),"text/html").querySelector("body").children;o.length>0;)this.popupTitle.appendChild(o[0]);"question"==e.specification.type?function(e){var t=document.createElement("textarea");switch(e.specification.boxsize){case"small":t.cols="20",t.rows="1";break;case"normal":t.cols="30",t.rows="2";break;case"large":t.cols="40",t.rows="5";break;case"huge":t.cols="50",t.rows="10"}void 0===e.response?e.response="":t.value=e.response,this.popupResponse.appendChild(t),t.focus(),this.popupResponse.style.textAlign="center",this.popupResponse.style.left="0%"}.call(this,e):"checkbox"==e.specification.type?function(e){null===e.response&&(e.response=[]);var t=document.createElement("table");t.className="popup-option-list",t.border="0";var i=[];e.specification.options.forEach(function(t,n){var o=document.createElement("tr");i.push(o);var s=document.createElement("td");o.appendChild(s);var r=document.createElement("input");r.id=t.name,r.type="checkbox",s.appendChild(r),s=document.createElement("td"),o.appendChild(s);var a=document.createElement("span");a.textContent=t.text,s.appendChild(a),(o=document.createElement("div")).setAttribute("name","option"),o.className="popup-option-checbox";var c;e.response.length>0&&(c=e.response.find(function(e){return e.name==t.name})),void 0!==c?!0===c.checked&&(r.checked="true"):e.response.push({name:t.name,text:t.text,checked:!1})}),e.specification.randomise&&(i=randomiseOrder(i)),i.forEach(function(e){t.appendChild(e)}),this.popupResponse.appendChild(t)}.call(this,e):"radio"==e.specification.type?function(e){null===e.response&&(e.response={name:"",text:""});var t=document.createElement("table");t.className="popup-option-list",t.border="0";var i=[];e.specification.options.forEach(function(t,n){var o=document.createElement("tr");i.push(o);var s=document.createElement("td");o.appendChild(s);var r=document.createElement("input");r.id=t.name,r.type="radio",r.name=e.specification.id,s.appendChild(r),s=document.createElement("td"),o.appendChild(s);var a=document.createElement("span");a.textContent=t.text,s.appendChild(a),(o=document.createElement("div")).setAttribute("name","option"),o.className="popup-option-checkbox",e.response.name===t.name&&(r.checked=!0)}),e.specification.randomise&&(i=randomiseOrder(i)),i.forEach(function(e){t.appendChild(e)}),this.popupResponse.appendChild(t)}.call(this,e):"number"==e.specification.type?function(e){var t=document.createElement("input");t.type="textarea",null!==e.specification.min&&(t.min=e.specification.min),null!==e.specification.max&&(t.max=e.specification.max),null!==e.specification.step&&(t.step=e.specification.step),void 0!==e.response&&(t.value=e.response),this.popupResponse.appendChild(t),this.popupResponse.style.textAlign="center",this.popupResponse.style.left="0%"}.call(this,e):"video"==e.specification.type?function(e){var t=document.createElement("video");t.src=e.specification.url,this.popupResponse.appendChild(t)}.call(this,e):"youtube"==e.specification.type?function(e){var t=document.createElement("iframe");t.className="youtube",t.src=e.specification.url,this.popupResponse.appendChild(t)}.call(this,e):"slider"==e.specification.type&&function(e){var t=document.createElement("div"),i=document.createElement("input");i.type="range",i.style.width="90%",null!==e.specification.min&&(i.min=e.specification.min),null!==e.specification.max&&(i.max=e.specification.max),void 0!==e.response&&(i.value=e.response),t.className="survey-slider-text-holder";var n=document.createElement("span"),o=document.createElement("span");n.textContent=e.specification.leftText,o.textContent=e.specification.rightText,t.appendChild(n),t.appendChild(o),this.popupResponse.appendChild(i),this.popupResponse.appendChild(t),this.popupResponse.style.textAlign="center"}.call(this,e),this.currentIndex+1==this.popupOptions.length?"pre"==this.node.location?this.buttonProceed.textContent="Start":this.buttonProceed.textContent="Submit":this.buttonProceed.textContent="Next",this.currentIndex>0?this.buttonPrevious.style.visibility="visible":this.buttonPrevious.style.visibility="hidden"},this.initState=function(e,t){e.options.length>0?(this.popupOptions=[],this.node=e,this.store=t,e.options.forEach(function(e){this.popupOptions.push({specification:e,response:null})},this),this.currentIndex=0,this.showPopup(),this.postNode()):advanceState()},this.proceedClicked=function(){if(0===testState.stateIndex&&specification.calibration)return interfaceContext.calibrationModuleObject.collect(),void advanceState();var t=this.popupOptions[this.currentIndex],i=!0,n=(new Date-r)/1e3;n<t.specification.minWait?interfaceContext.lightbox.post("Error","Not enough time has elapsed, please wait "+(t.specification.minWait-n).toFixed(0)+" seconds"):(t.elapsedTime=n,"question"==t.specification.type?i=function(t){var i=this.popupResponse.getElementsByTagName("textarea")[0];return!0===t.specification.mandatory&&0===i.value.length?(interfaceContext.lightbox.post("Error","This question is mandatory"),!1):(console.log("Question: "+t.specification.statement),console.log("Question Response: "+i.value),t.response=i.value,e.call(this,t,i.value),!0)}.call(this,t):"checkbox"==t.specification.type?i=function(t){console.log("Checkbox: "+t.specification.statement);var i,n=this.popupResponse.getElementsByTagName("input"),o=0;for(i=0;i<t.specification.options.length;i++)n[i].checked&&o++;if(void 0!==t.specification.min)if(void 0===t.specification.max){if(o<t.specification.min){var s="You must select at least "+t.specification.min+" option";return t.specification.min>1&&(s+="s"),void interfaceContext.lightbox.post("Error",s)}}else if(o<t.specification.min||o>t.specification.max)return t.specification.min==t.specification.max?interfaceContext.lightbox.post("Error","You must only select "+t.specification.min):interfaceContext.lightbox.post("Error","You must select between "+t.specification.min+" and "+t.specification.max),!1;for(i=0;i<t.specification.options.length;i++)t.response.forEach(function(e){var t=this.popupResponse.querySelector("#"+e.name);e.checked=t.checked}),console.log(t.specification.options[i].name+": "+n[i].checked);return e.call(this,t,t.response),!0}.call(this,t):"radio"==t.specification.type?i=function(t){var i=this.popupResponse;console.log("Radio: "+t.specification.statement),t.response=null;for(var n,o=0,s=i.getElementsByTagName("input");void 0===n;){if(o==s.length){if(!0===t.specification.mandatory)return interfaceContext.lightbox.post("Error","Please select one option"),!1;break}!0===s[o].checked&&(n=s[o]),o++}var r=t.specification.options.find(function(e){return n.id==e.name});if(void 0===r)throw interfaceContext.lightbox.post("Error","A configuration error has occured, the test cannot be continued"),"ERROR - Cannot find option";return t.response=r,e.call(this,t,t.response.name),!0}.call(this,t):"number"==t.specification.type?i=function(t){var i=this.popupContent.getElementsByTagName("input")[0];if(!0===t.specification.mandatory&&0===i.value.length)return interfaceContext.lightbox.post("Error","This question is mandatory. Please enter a number"),!1;var n=Number(i.value);return isNaN(n)?(interfaceContext.lightbox.post("Error","Please enter a valid number"),!1):n<t.specification.min&&null!==t.specification.min?(interfaceContext.lightbox.post("Error","Number is below the minimum value of "+t.specification.min),!1):n>t.specification.max&&null!==t.specification.max?(interfaceContext.lightbox.post("Error","Number is above the maximum value of "+t.specification.max),!1):(t.response=i.value,e.call(this,t,t.response),!0)}.call(this,t):"slider"==t.specification.type&&(i=function(t){var i=this.popupContent.getElementsByTagName("input")[0];return t.response=i.value,e.call(this,t,t.response),!0}.call(this,t)),!1!==i&&(this.currentIndex++,this.currentIndex<this.popupOptions.length?this.postNode():(this.popupTitle.innerHTML="",this.popupResponse.innerHTML="",this.hidePopup(),this.popupOptions.forEach(function(e){this.store.postResult(e)},this),this.store.complete(),advanceState())))},this.previousClick=function(){this.currentIndex>0&&(this.currentIndex--,this.postNode())},this.resize=function(e){if(null!==this.popup){this.popup.style.left=window.innerWidth/2-250+"px",this.popup.style.top=window.innerHeight/2-125+"px";var t=document.getElementsByClassName("testHalt")[0];t.style.width=window.innerWidth,t.style.height=window.innerHeight}},this.hideNextButton=function(){this.buttonProceed.style.visibility="hidden"},this.hidePreviousButton=function(){this.buttonPrevious.style.visibility="hidden"},this.showNextButton=function(){this.buttonProceed.style.visibility="visible"},this.showPreviousButton=function(){this.buttonPrevious.style.visibility="visible"}}function advanceState(){testState.advanceState()}function stateMachine(){function e(e,t){var i=[];return e.forEach(function(t,n){t.alwaysInclude&&i.push(e.splice(n,1)[0])}),i.concat(randomSubArray(e,t-i.length))}this.stateMap=[],this.preTestSurvey=null,this.postTestSurvey=null,this.stateIndex=null,this.currentStateMap=null,this.currentStatePosition=null,this.currentStore=null,this.initialise=function(){var t=[];specification.pages.forEach(function(e){(null!==e.position||e.alwaysInclude)&&(e.alwaysInclude=!0),t.push(e)}),specification.numPages>0&&(specification.randomiseOrder=!0,t=e(t,specification.numPages));var i=[];t.forEach(function(e){if(void 0!==e.position){i.push(e);var n=t.indexOf(e);t.splice(n,1)}}),specification.randomiseOrder&&(t=randomiseOrder(t)),i.forEach(function(e){t.splice(e.position,0,e)}),t.forEach(function(t,i){t.presentedId=i,this.stateMap.push(t);t.audioElements;!function(t){var i=[],n=[],o=[];t.audioElements.forEach(function(e){e.label.length>0||void 0!==e.postion?i.push(e):"outside-reference"===e.type?n.push(e):o.push(e)}),(t.poolSize>0||t.randomiseOrder)&&(t.randomiseOrder=!0,0===t.poolSize&&(t.poolSize=t.audioElements.length),t.poolSize-=i.length,o=e(o,t.poolSize)),t.randomiseOrder&&(o=randomiseOrder(o)),i=i.concat(o),t.audioElements=i.concat(n),t.audioElements.forEach(function(e,t){e.position=t})}(t),storage.createTestPageStore(t),audioEngineContext.loadPageData(t)},this),null!==specification.preTest&&(this.preTestSurvey=specification.preTest),null!==specification.postTest&&(this.postTestSurvey=specification.postTest),this.stateMap.length>0?(null!==this.stateIndex&&console.log("NOTE - State already initialise"),this.stateIndex=-2,console.log("Starting test...")):console.log("FATAL - StateMap not correctly constructed. EMPTY_STATE_MAP")},this.advanceState=function(){if(null===this.stateIndex&&this.initialise(),this.stateIndex>-2&&storage.update(),-2==this.stateIndex)this.stateIndex++,void 0!==this.preTestSurvey?popup.initState(this.preTestSurvey,storage.globalPreTest):this.advanceState();else if(-1==this.stateIndex)this.stateIndex++,specification.calibration?(popup.showPopup(),popup.popupTitle.textContent="Calibration. Set the levels so all tones are of equal amplitude. Move your mouse over the sliders to hear the tones. The red slider is the reference tone",interfaceContext.calibrationModuleObject=new interfaceContext.calibrationModule,interfaceContext.calibrationModuleObject.build(popup.popupResponse),popup.hidePreviousButton()):this.advanceState();else if(this.stateIndex==this.stateMap.length)console.log("Ending test ..."),this.stateIndex++,void 0===this.postTestSurvey?this.advanceState():popup.initState(this.postTestSurvey,storage.globalPostTest);else if(this.stateIndex>this.stateMap.length)createProjectSave(specification.projectReturn);else{if(popup.hidePopup(),null===this.currentStateMap)return this.currentStateMap=this.stateMap[this.stateIndex],this.currentStore=storage.testPages[this.stateIndex],void 0!==this.currentStateMap.preTest?(this.currentStatePosition="pre",popup.initState(this.currentStateMap.preTest,storage.testPages[this.stateIndex].preTest)):this.currentStatePosition="test",void interfaceContext.newPage(this.currentStateMap,storage.testPages[this.stateIndex]);switch(this.currentStatePosition){case"pre":this.currentStatePosition="test";break;case"test":if(this.currentStatePosition="post",this.testPageCompleted(),void 0===this.currentStateMap.postTest)return void this.advanceState();popup.initState(this.currentStateMap.postTest,storage.testPages[this.stateIndex].postTest);break;case"post":this.stateIndex++,this.currentStateMap=null,this.advanceState()}}},this.testPageCompleted=function(){var e=storage.testPages[this.stateIndex],t=e.XMLDOM.getElementsByTagName("metric")[0];if(audioEngineContext.metric.enableTestTimer){var i=e.parent.document.createElement("metricresult");i.id="testTime",i.textContent=audioEngineContext.timer.testDuration,t.appendChild(i)}audioEngineContext.audioObjects;audioEngineContext.audioObjects.forEach(function(e){e.exportXMLDOM()}),interfaceContext.commentQuestions.forEach(function(t){t.exportXMLDOM(e)}),pageXMLSave(e.XMLDOM,this.currentStateMap),e.complete()},this.getCurrentTestPage=function(){return this.stateIndex>=0&&this.stateIndex<this.stateMap.length?this.currentStateMap:null},this.getCurrentTestPageStore=function(){return this.stateIndex>=0&&this.stateIndex<this.stateMap.length?this.currentStore:null}}function AudioEngine(e){this.outputGain=audioContext.createGain(),this.fooGain=audioContext.createGain(),this.fooGain.gain.value=0,this.status=0,this.outputGain.connect(audioContext.destination),this.fooGain.connect(audioContext.destination),this.timer=new timer,this.metric=new sessionMetrics(this,e),this.loopPlayback=!1,this.synchPlayback=!1,this.pageSpecification=null,this.pageStore=null;var t=audioContext.createBuffer(1,audioContext.sampleRate,audioContext.sampleRate);this.nullBufferSource=audioContext.createBufferSource(),this.nullBufferSource.buffer=t,this.nullBufferSource.loop=!0,this.nullBufferSource.start(0),this.audioObjects=[],this.buffers=[],this.bufferObj=function(){var e=[];this.buffer=null,this.users=[],this.progress=0,this.status=0,this.ready=function(){this.status>=2&&(this.status=3);for(var e=0;e<this.users.length;e++)this.users[e].state=1,null!==this.users[e].interfaceDOM&&this.users[e].bufferLoaded(this)},this.setUrls=function(t){var i,n=audioContext.sampleRate,o=[];for(i=0;i<t.length;i++)t[i].sampleRate==n&&o.push(t.splice(i,1)[0]);o=o.concat(t),e=o},this.hasUrl=function(t){var i,n=e.length;for(i=0;i<n;i++)if(e[i].url==t)return!0;return!1},this.getMedia=function(){function t(e){return new Promise(function(t,i){var n=new XMLHttpRequest;n.open("GET",e,!0),n.responseType="arraybuffer",n.onload=function(){200==n.status&&t(n.response)},n.onerror=function(){i(new Error(n.statusText))},n.addEventListener("progress",function(e){if(e.lengthComputable){this.progress=e.loaded/e.total;for(var t=0;t<this.users.length;t++)null!==this.users[t].interfaceDOM&&"function"==typeof this.users[t].interfaceDOM.updateLoading&&this.users[t].interfaceDOM.updateLoading(100*this.progress)}}.bind(o)),n.send()})}function i(){if(!(++s>=e.length))return t(e[s].url).then(n.bind(this)).catch(i.bind(this));!function(){this.status=-1;for(var t=0;t<this.users.length;t++)this.users[t].state=-1,null!==this.users[t].interfaceDOM&&this.users[t].bufferLoaded(this);interfaceContext.lightbox.post("Error","Could not load resource "+e[s].url)}()}function n(e){var t=this;return audioContext.decodeAudioData(e,function(e){return t.buffer=e,t.status=2,calculateLoudness(t,"I"),!0},function(i){var n=new WAVE;if(0===n.open(e)){t.buffer=audioContext.createBuffer(n.num_channels,n.num_samples,n.sample_rate);for(var o=0;o<n.num_channels;o++)for(var s=t.buffer.getChannelData(o),r=0;r<n.num_samples;r++)s[r]=n.decoded_data[o][r]}return void 0!==t.buffer?(t.status=2,calculateLoudness(t,"I"),!0):(n=void 0,!1)})}var o=this,s=0;this.progress=0,this.status=1,s=0,t(e[0].url).then(n.bind(o)).catch(i.bind(o))},this.registerAudioObject=function(e){this.users.forEach(function(t){if(e.id==t.id)return 0}),this.users.push(e),3!=this.status&&-1!=this.status||e.bufferLoaded(this)},this.copyBuffer=function(e,t){void 0===e&&(e=0),void 0===t&&(t=0);var i,n=secondsToSamples(e,this.buffer.sampleRate),o=secondsToSamples(t,this.buffer.sampleRate),s=this.buffer.length+n+o,r=audioContext.createBuffer(this.buffer.numberOfChannels,s,this.buffer.sampleRate);if(0===n&&"function"==typeof r.copyToChannel)for(i=0;i<this.buffer.numberOfChannels;i++)r.copyToChannel(this.buffer.getChannelData(i),i);else for(i=0;i<this.buffer.numberOfChannels;i++)for(var a=this.buffer.getChannelData(i),c=r.getChannelData(i),l=0;l<a.length;l++)c[l+n]=a[l];return r.lufs=this.buffer.lufs,r.playbackGain=this.buffer.playbackGain,r},this.cropBuffer=function(e,t){for(var i=Math.floor(e*this.buffer.sampleRate),n=Math.floor(t*this.buffer.sampleRate),o=n-i,s=audioContext.createBuffer(this.buffer.numberOfChannels,o,this.buffer.sampleRate),r=0;r<this.buffer.numberOfChannels;r++){var a=this.buffer.getChannelData(r),c=a.subarray(i,n);if("function"==typeof s.copyToChannel)s.copyToChannel(c,r);else for(var l=s.getChannelData(r),u=0;u<o;u++)l[u]=a[u+i]}return s}},this.loadPageData=function(e){e.audioElements.forEach(function(t){var i=e.hostURL+t.url,n=this.buffers.find(function(e){return e.hasUrl(i)});if(void 0===n){n=new this.bufferObj;var o=[{url:i,sampleRate:t.sampleRate}];t.alternatives.forEach(function(e){o.push({url:e.url,sampleRate:e.sampleRate})}),n.setUrls(o),n.getMedia(),this.buffers.push(n)}},this)},this.play=function(t){if("number"!=typeof t||t<0||t>this.audioObjects.length)throw"FATAL - Passed id was undefined - AudioEngineContext.play(id)";var i=this.audioObjects[t].specification.maxNumberPlays||this.audioObjects[t].specification.parent.maxNumberPlays||e.maxNumberPlays;if(void 0!==i&&this.audioObjects[t].numberOfPlays>=i)interfaceContext.lightbox.post("Error","Cannot play this fragment more than "+i+" times");else if(1===this.status){if(this.timer.startTest(),interfaceContext.playhead.setTimePerPixel(this.audioObjects[t]),this.synchPlayback)(function(t){var i=audioContext.currentTime+.1;e.crossFade,this.audioObjects.forEach(function(e){e.setupPlayback(),e.bufferStart(i),e.id===t?e.listenStart(i):e.listenStop(i)})}).call(this,t);else{if(!1===this.bufferReady(t))return void console.log("Cannot play. Buffer not ready");(function(t){var i=audioContext.currentTime+.1,n=i+e.crossFade;this.audioObjects.forEach(function(e){e.id===t?(e.setupPlayback(),e.bufferStart(i),e.listenStart(i)):(e.listenStop(i),e.bufferStop(n))})}).call(this,t)}interfaceContext.playhead.start()}},this.stop=function(){if(1==this.status){var e=audioContext.currentTime+.1;this.audioObjects.forEach(function(t){t.listenStop(e),t.bufferStop(e)}),interfaceContext.playhead.stop()}},this.newTrack=function(e){var t=this.audioObjects.length;this.audioObjects[t]=new audioObject(t);var i=testState.currentStateMap.hostURL+e.url,n=this.buffers.find(function(e){return e.hasUrl(i)});void 0===n&&(console.log("[WARN]: Buffer was not loaded in pre-test! "+i),n=new this.bufferObj,this.buffers.push(n),n.getMedia(i)),this.audioObjects[t].specification=e,this.audioObjects[t].url=i;for(var o=this.pageStore.XMLDOM.getElementsByTagName("audioelement"),s=0;s<o.length;s++)if(o[s].getAttribute("ref")==e.id){this.audioObjects[t].storeDOM=o[s];break}return n.registerAudioObject(this.audioObjects[t]),this.audioObjects[t]},this.newTestPage=function(e,t){this.pageStore=t,this.pageSpecification=e,this.status=0,this.audioObjectsReady=!1,this.metric.reset(),this.buffers.forEach(function(e){e.users=[]}),this.audioObjects=[],this.timer=new timer,this.loopPlayback=e.loop,this.synchPlayback=e.synchronous,interfaceContext.keyboardInterface.resetKeyBindings()},this.checkAllPlayed=function(){for(var e=[],t=0;t<this.audioObjects.length;t++)!1===this.audioObjects[t].metric.wasListenedTo&&e.push(this.audioObjects[t].id);return e},this.checkAllReady=function(){for(var e=!0,t=0;t<this.audioObjects.length;t++)0===this.audioObjects[t].state&&(console.log("WAIT -- audioObject "+t+" not ready yet!"),e=!1);return e},this.setSynchronousLoop=function(){for(var e=0,t=0;t<this.audioObjects.length;t++)e<this.audioObjects[t].buffer.buffer.duration&&(e=this.audioObjects[t].buffer.buffer.duration,t);this.audioObjects.forEach(function(t){t.buffer.buffer.duration!==e&&(t.buffer.buffer=t.buffer.copyBuffer(0,e-t.buffer.buffer.duration))})},this.bufferReady=function(e){return!!this.checkAllReady()&&(this.synchPlayback&&this.setSynchronousLoop(),this.status=1,!0)}}function audioObject(e){var t=0;this.specification=void 0,this.id=e,this.state=0,this.url=null,this.metric=new metricTracker(this),this.storeDOM=null,this.playing=!1,this.interfaceDOM=null,this.commentDOM=null,this.bufferNode=void 0,this.outputGain=audioContext.createGain(),this.outputGain.gain.value=0,this.onplayGain=1,this.outputGain.connect(audioEngineContext.outputGain),audioEngineContext.nullBufferSource.connect(this.outputGain),this.buffer=void 0,this.bufferLoaded=function(t){if(-1==t.status)return this.state=-1,null!==this.interfaceDOM&&this.interfaceDOM.error(),void(this.buffer=t);this.buffer=t;var i=this.specification.preSilence||this.specification.parent.preSilence||specification.preSilence||0,n=this.specification.postSilence||this.specification.parent.postSilence||specification.postSilence||0,o=this.specification.startTime,s=this.specification.stopTime,r=new t.constructor;r.buffer=t.cropBuffer(o||0,s||t.buffer.duration),0===i&&0===n||(r.buffer=r.copyBuffer(i,n)),r.buffer.lufs=t.buffer.lufs,this.buffer=r;var a=this.specification.loudness||this.specification.parent.loudness||specification.loudness;"number"==typeof a&&isFinite(a)?this.buffer.buffer.playbackGain=decibelToLinear(a-this.buffer.buffer.lufs):this.buffer.buffer.playbackGain=1,null!==this.interfaceDOM&&this.interfaceDOM.enable(),this.onplayGain=decibelToLinear(this.specification.gain)*(this.buffer.buffer.playbackGain||1),this.storeDOM.setAttribute("playGain",linearToDecibel(this.onplayGain)),this.state=1,audioEngineContext.bufferReady(e)},this.bindInterface=function(e){if(this.interfaceDOM=e,this.metric.initialise(e.getValue()),1==this.state)this.interfaceDOM.enable();else if(-1==this.state)return void this.interfaceDOM.error();var t=e.getPresentedId();this.storeDOM.setAttribute("presentedId",t),1==t.length&&interfaceContext.keyboardInterface.registerKeyBinding(t,this)},this.listenStart=function(e){!1===this.playing&&(t++,this.outputGain.gain.linearRampToValueAtTime(this.onplayGain,e),this.metric.startListening(audioEngineContext.timer.getTestTime()),this.bufferNode.playbackStartTime=audioEngineContext.timer.getTestTime(),this.interfaceDOM.startPlayback(),this.playing=!0)},this.listenStop=function(e){!0===this.playing&&(this.outputGain.gain.linearRampToValueAtTime(0,e),this.metric.stopListening(audioEngineContext.timer.getTestTime(),this.getCurrentPosition())),this.interfaceDOM.stopPlayback(),this.playing=!1},this.setupPlayback=function(){void 0===this.bufferNode&&void 0!==this.buffer.buffer&&(this.bufferNode=audioContext.createBufferSource(),this.bufferNode.owner=this,this.bufferNode.connect(this.outputGain),this.bufferNode.buffer=this.buffer.buffer,audioEngineContext.loopPlayback&&(this.bufferNode.loopStart=this.specification.startTime||0,this.bufferNode.loopEnd=this.specification.stopTime-this.specification.startTime||this.buffer.buffer.duration,this.bufferNode.loop=!0),this.bufferNode.onended=function(e){null!==e.currentTarget&&(e.currentTarget.owner.bufferStop(audioContext.currentTime+.1),e.currentTarget.owner.listenStop(audioContext.currentTime+.1))},this.bufferNode.state=0)},this.bufferStart=function(e){this.outputGain.gain.cancelScheduledValues(audioContext.currentTime),this.bufferNode&&0===this.bufferNode.state&&(this.bufferNode.state=1,!0===this.bufferNode.loop?this.bufferNode.start(e):this.bufferNode.start(e,this.specification.startTime||0,this.specification.stopTime-this.specification.startTime||this.buffer.buffer.duration))},this.bufferStop=function(e){this.outputGain.gain.cancelScheduledValues(audioContext.currentTime),void 0!==this.bufferNode&&this.bufferNode.state>0&&(this.bufferNode.stop(e),this.bufferNode=void 0),this.outputGain.gain.linearRampToValueAtTime(0,e),this.interfaceDOM.stopPlayback()},this.getCurrentPosition=function(){var e=audioEngineContext.timer.getTestTime();if(void 0!==this.bufferNode){var t=(e-this.bufferNode.playbackStartTime)%this.buffer.buffer.duration;return isNaN(t)?0:t}return 0},this.exportXMLDOM=function(){var e=storage.document.createElement("file");if(e.setAttribute("sampleRate",this.buffer.buffer.sampleRate),e.setAttribute("channels",this.buffer.buffer.numberOfChannels),e.setAttribute("sampleCount",this.buffer.buffer.length),e.setAttribute("duration",this.buffer.buffer.duration),this.storeDOM.appendChild(e),"outside-reference"!=this.specification.type){var t=this.interfaceDOM.exportXMLDOM(this);if(null!==t)if(void 0===t.length)this.storeDOM.appendChild(t);else for(var i=0;i<t.length;i++)this.storeDOM.appendChild(t[i]);null!==this.commentDOM&&this.storeDOM.appendChild(this.commentDOM.exportXMLDOM(this))}this.metric.exportXMLDOM(this.storeDOM.getElementsByTagName("metric")[0])},Object.defineProperties(this,{numberOfPlays:{get:function(){return t},set:function(){return t}}})}function timer(){this.testStarted=!1,this.testStartTime=0,this.testDuration=0,this.minimumTestTime=0,this.startTest=function(){!1===this.testStarted&&(this.testStartTime=audioContext.currentTime,this.testStarted=!0,this.updateTestTime(),audioEngineContext.metric.initialiseTest())},this.stopTest=function(){this.testStarted?(this.testDuration=this.getTestTime(),this.testStarted=!1):console.log("ERR: Test tried to end before beginning")},this.updateTestTime=function(){this.testStarted&&(this.testDuration=audioContext.currentTime-this.testStartTime)},this.getTestTime=function(){return this.updateTestTime(),this.testDuration}}function sessionMetrics(e,t){this.engine=e,this.lastClicked=-1,this.data=-1,this.reset=function(){this.lastClicked=-1,this.data=-1},this.enableElementInitialPosition=!1,this.enableElementListenTracker=!1,this.enableElementTimer=!1,this.enableElementTracker=!1,this.enableFlagListenedTo=!1,this.enableFlagMoved=!1,this.enableTestTimer=!1;for(var i=0;i<t.metrics.enabled.length;i++){switch(t.metrics.enabled[i]){case"testTimer":this.enableTestTimer=!0;break;case"elementTimer":this.enableElementTimer=!0;break;case"elementTracker":this.enableElementTracker=!0;break;case"elementListenTracker":this.enableElementListenTracker=!0;break;case"elementInitialPosition":this.enableElementInitialPosition=!0;break;case"elementFlagListenedTo":this.enableFlagListenedTo=!0;break;case"elementFlagMoved":this.enableFlagMoved=!0;break;case"elementFlagComments":this.enableFlagComments=!0}}this.initialiseTest=function(){}}function metricTracker(e){this.listenedTimer=0,this.listenStart=0,this.listenHold=!1,this.initialPosition=-1,this.movementTracker=[],this.listenTracker=[],this.wasListenedTo=!1,this.wasMoved=!1,this.hasComments=!1,this.parent=e,this.initialise=function(e){-1==this.initialPosition&&(this.initialPosition=e,this.moved(0,e))},this.moved=function(e,t){e>0&&(this.wasMoved=!0),t!=(this.movementTracker.length>0?this.movementTracker[this.movementTracker.length-1]:-1)[1]&&(this.movementTracker[this.movementTracker.length]=[e,t])},this.startListening=function(e){if(!1===this.listenHold){this.wasListenedTo=!0,this.listenStart=e,this.listenHold=!0;var t=document.createElement("event"),i=document.createElement("testTime");i.setAttribute("start",e);var n=document.createElement("bufferTime");n.setAttribute("start",this.parent.getCurrentPosition()),t.appendChild(i),t.appendChild(n),this.listenTracker.push(t),console.log("slider "+this.parent.id+" played ("+e+")")}},this.stopListening=function(e,t){if(!0===this.listenHold){var i=e-this.listenStart;this.listenedTimer+=i,this.listenStart=0,this.listenHold=!1;var n=this.listenTracker[this.listenTracker.length-1],o=n.getElementsByTagName("testTime")[0],s=n.getElementsByTagName("bufferTime")[0];o.setAttribute("stop",e),void 0===t?s.setAttribute("stop",this.parent.getCurrentPosition()):s.setAttribute("stop",t),console.log("slider "+this.parent.id+" played for ("+i+")")}},this.exportXMLDOM=function(e){var t=[];return audioEngineContext.metric.enableElementTimer&&t.push(function(e){var t=storage.document.createElement("metricresult");return t.setAttribute("name","enableElementTimer"),t.textContent=this.listenedTimer,e.appendChild(t),t}.call(this,e)),audioEngineContext.metric.enableElementTracker&&t.push(function(e){var t=storage.document.createElement("metricresult");t.setAttribute("name","elementTrackerFull");for(var i=0;i<this.movementTracker.length;i++){var n=storage.document.createElement("movement");n.setAttribute("time",this.movementTracker[i][0]),n.setAttribute("value",this.movementTracker[i][1]),t.appendChild(n)}return e.appendChild(t),t}.call(this,e)),audioEngineContext.metric.enableElementListenTracker&&t.push(function(e){var t=storage.document.createElement("metricresult");t.setAttribute("name","elementListenTracker");for(var i=0;i<this.listenTracker.length;i++)t.appendChild(this.listenTracker[i]);return e.appendChild(t),t}.call(this,e)),audioEngineContext.metric.enableElementInitialPosition&&t.push(function(e){var t=storage.document.createElement("metricresult");return t.setAttribute("name","elementInitialPosition"),t.textContent=this.initialPosition,e.appendChild(t),t}.call(this,e)),audioEngineContext.metric.enableFlagListenedTo&&t.push(function(e){var t=storage.document.createElement("metricresult");return t.setAttribute("name","elementFlagListenedTo"),t.textContent=this.wasListenedTo,e.appendChild(t),t}.call(this,e)),audioEngineContext.metric.enableFlagMoved&&t.push(function(e){var t=storage.document.createElement("metricresult");return t.setAttribute("name","elementFlagMoved"),t.textContent=this.wasMoved,e.appendChild(t),t}.call(this,e)),audioEngineContext.metric.enableFlagComments&&t.push(function(e){var t=storage.document.createElement("metricresult");return t.setAttribute("name","elementFlagComments"),null===this.parent.commentDOM?t.textContent="false":0===this.parent.commentDOM.textContent.length?t.textContent="false":t.textContet="true",e.appendChild(t),t}.call(this,e)),t}}function Interface(e){this.specification=e,this.insertPoint=document.getElementById("topLevelBody"),this.newPage=function(e,t){audioEngineContext.newTestPage(e,t),interfaceContext.commentBoxes.deleteCommentBoxes(),interfaceContext.deleteCommentQuestions(),loadTest(e,t)},this.keyboardInterface=function(){var e={keys:[],registerKeyBinding:function(e,t){if("string"!=typeof e||1!=e.length)throw"Key must be a singular character";if(this.keys.findIndex(function(t){return t.key==e})>=0)throw"Key "+e+" already bounded!";return this.keys.push({key:e,audioObject:t}),!0},deregisterKeyBinding:function(e){var t=this.keys.findIndex(function(t){return t.key==e});if(-1==t)throw"Key "+e+" not bounded!";return this.keys.splice(t,1),!0},resetKeyBindings:function(){this.keys=[]},handleEvent:function(e){" "===e.key?audioEngineContext.audioObjects.some(function(e){return e.playing})&&document.activeElement.className.indexOf("trackComment")>=0==!1&&(e.preventDefault(),audioEngineContext.stop()):function(e){var t=this.keys.findIndex(function(t){return t.key==e});t>=0&&audioEngineContext.play(this.keys[t].audioObject.id)}.call(this,e.key),console.log(e)}};return document.addEventListener("keydown",e,!1),e}(),this.interfaceObjects=[],this.interfaceObject=function(){},this.resizeWindow=function(e){popup.resize(e),this.volume.resize(),this.lightbox.resize(),this.commentBoxes.boxes.forEach(function(e){e.resize()}),this.commentQuestions.forEach(function(e){e.resize()});try{resizeWindow(e)}catch(e){console.log("Warning - Interface does not have Resize option"),console.log(e)}},this.returnNavigator=function(){var e=storage.document.createElement("navigator"),t=storage.document.createElement("platform");t.textContent=navigator.platform;var i=storage.document.createElement("vendor");i.textContent=navigator.vendor;var n=storage.document.createElement("uagent");n.textContent=navigator.userAgent;var o=storage.document.createElement("window");return o.setAttribute("innerWidth",window.innerWidth),o.setAttribute("innerHeight",window.innerHeight),e.appendChild(t),e.appendChild(i),e.appendChild(n),e.appendChild(o),e},this.returnDateNode=function(){var e=new Date,t=storage.document.createElement("datetime"),i=storage.document.createElement("date"),n=storage.document.createElement("time");return i.setAttribute("year",e.getFullYear()),i.setAttribute("month",e.getMonth()+1),i.setAttribute("day",e.getDate()),n.setAttribute("hour",e.getHours()),n.setAttribute("minute",e.getMinutes()),n.setAttribute("secs",e.getSeconds()),t.appendChild(i),t.appendChild(n),t},this.lightbox={parent:this,root:document.createElement("div"),content:document.createElement("div"),accept:document.createElement("button"),blanker:document.createElement("div"),post:function(e,t){switch(e){case"Error":this.content.className="lightbox-error";break;case"Warning":this.content.className="lightbox-warning";break;default:this.content.className="lightbox-message"}var i=document.createElement("p");i.textContent=t,this.content.appendChild(i),this.show()},show:function(){this.root.style.visibility="visible",this.blanker.style.visibility="visible",this.accept.focus()},clear:function(){this.root.style.visibility="",this.blanker.style.visibility="",this.content.textContent=""},handleEvent:function(e){e.currentTarget==this.accept&&this.clear()},resize:function(e){this.root.style.left=window.innerWidth/2-250+"px"},isVisible:function(){return"visible"==this.root.style.visibility}},this.lightbox.root.appendChild(this.lightbox.content),this.lightbox.root.appendChild(this.lightbox.accept),this.lightbox.root.className="popupHolder",this.lightbox.root.id="lightbox-root",this.lightbox.accept.className="popupButton",this.lightbox.accept.style.bottom="10px",this.lightbox.accept.textContent="OK",this.lightbox.accept.style.left="237.5px",this.lightbox.accept.addEventListener("click",this.lightbox),this.lightbox.blanker.className="testHalt",this.lightbox.blanker.id="lightbox-blanker",document.getElementsByTagName("body")[0].appendChild(this.lightbox.root),document.getElementsByTagName("body")[0].appendChild(this.lightbox.blanker),this.commentBoxes=function(){var e={};return e.boxes=[],e.injectPoint=null,e.elementCommentBox=function(e){e.specification;this.audioObject=e,this.id=e.id;var t=e.specification.parent;this.trackComment=document.createElement("div"),this.trackComment.className="comment-div",this.trackComment.id="comment-div-"+e.id,this.trackString=document.createElement("span"),this.trackString.innerHTML=t.commentBoxPrefix+" "+e.interfaceDOM.getPresentedId(),this.trackCommentBox=document.createElement("textarea"),this.trackCommentBox.rows="4",this.trackCommentBox.cols="100",this.trackCommentBox.name="trackComment"+e.id,this.trackCommentBox.className="trackComment";var i=document.createElement("br");this.trackComment.appendChild(this.trackString),this.trackComment.appendChild(i),this.trackComment.appendChild(this.trackCommentBox),this.exportXMLDOM=function(){var e=document.createElement("comment"),t=document.createElement("question");t.textContent=this.trackString.textContent;var i=document.createElement("response");return i.textContent=this.trackCommentBox.value,console.log("Comment frag-"+this.id+": "+i.textContent),e.appendChild(t),e.appendChild(i),e},this.resize=function(){var e=(window.innerWidth-100)/2;e>=600?e=600:e<400&&(e=400),this.trackComment.style.width=e+"px",this.trackCommentBox.style.width=e-6+"px"},this.resize(),this.highlight=function(e){!0===e?$(this.trackComment).addClass("comment-box-playing"):$(this.trackComment).removeClass("comment-box-playing")}},e.createCommentBox=function(e){var t=new this.elementCommentBox(e);return this.boxes.push(t),e.commentDOM=t,t},e.sortCommentBoxes=function(){this.boxes.sort(function(e,t){return e.id-t.id})},e.showCommentBoxes=function(e,t){this.injectPoint=e,t&&this.sortCommentBoxes(),this.boxes.forEach(function(t){e.appendChild(t.trackComment)})},e.deleteCommentBoxes=function(){null!==this.injectPoint&&(this.boxes.forEach(function(e){this.injectPoint.removeChild(e.trackComment)},this),this.injectPoint=null),this.boxes=[]},e.highlightById=function(e){(void 0===e||"number"!=typeof e||e>=this.boxes.length)&&(console.log("Error - Invalid id"),e=-1),this.boxes.forEach(function(t){t.id===e?t.highlight(!0):t.highlight(!1)})},e}(),this.commentQuestions=[],this.commentBox=function(e){this.specification=e,this.holder=document.createElement("div"),this.holder.className="comment-div",this.string=document.createElement("span"),this.string.innerHTML=e.statement,this.textArea=document.createElement("textarea"),this.textArea.rows="4",this.textArea.cols="100",this.textArea.className="trackComment";var t=document.createElement("br");this.holder.appendChild(this.string),this.holder.appendChild(t),this.holder.appendChild(this.textArea),this.exportXMLDOM=function(e){var t=e.parent.document.createElement("comment");t.id=this.specification.id,t.setAttribute("type",this.specification.type),console.log("Question: "+this.string.textContent),console.log("Response: "+t.textContent);var i=e.parent.document.createElement("question");i.textContent=this.string.textContent;var n=e.parent.document.createElement("response");return n.textContent=this.textArea.value,t.appendChild(i),t.appendChild(n),e.XMLDOM.appendChild(t),t},this.resize=function(){var e=(window.innerWidth-100)/2;e>=600?e=600:e<400&&(e=400),this.holder.style.width=e+"px",this.textArea.style.width=e-6+"px"},this.resize(),this.check=function(){return!this.specification.mandatory||0!==this.textArea.value.length}},this.radioBox=function(e){this.specification=e,this.holder=document.createElement("div"),this.holder.className="comment-div",this.string=document.createElement("span"),this.string.innerHTML=e.statement,this.holder.appendChild(this.string),this.options=[],this.inputs=document.createElement("div"),this.inputs.className="comment-checkbox-inputs-holder";for(var t=e.options.length,i=0;i<t;i++){var n=document.createElement("div");n.className="comment-checkbox-inputs-flex";var o=document.createElement("span");o.textContent=e.options[i].text,o.className="comment-radio-span",n.appendChild(o);var s=document.createElement("input");s.type="radio",s.name=e.id,s.setAttribute("setvalue",e.options[i].name),s.className="comment-radio",n.appendChild(s),this.inputs.appendChild(n),this.options.push(s)}this.holder.appendChild(this.inputs),this.exportXMLDOM=function(e){var t=e.parent.document.createElement("comment");t.id=this.specification.id,t.setAttribute("type",this.specification.type);var i=document.createElement("question");i.textContent=this.string.textContent;for(var n=document.createElement("response"),o=0;!1===this.options[o].checked&&!(++o>=this.options.length););return o>=this.options.length?n.textContent="null":(n.textContent=this.options[o].getAttribute("setvalue"),n.setAttribute("number",o)),console.log("Comment: "+i.textContent),console.log("Response: "+n.textContent),t.appendChild(i),t.appendChild(n),e.XMLDOM.appendChild(t),t},this.resize=function(){var e=(window.innerWidth-100)/2;e>=600?e=600:e<400&&(e=400),this.holder.style.width=e+"px"},this.check=function(){var e=this.options.some(function(e){return e.checked});return!this.specification.mandatory||!1!==e},this.resize()},this.checkboxBox=function(e){this.specification=e,this.holder=document.createElement("div"),this.holder.className="comment-div",this.string=document.createElement("span"),this.string.innerHTML=e.statement,this.holder.appendChild(this.string),this.options=[],this.inputs=document.createElement("div"),this.inputs.className="comment-checkbox-inputs-holder";for(var t=e.options.length,i=0;i<t;i++){var n=document.createElement("div");n.className="comment-checkbox-inputs-flex";var o=document.createElement("span");o.textContent=e.options[i].text,o.className="comment-radio-span",n.appendChild(o);var s=document.createElement("input");s.type="checkbox",s.name=e.id,s.setAttribute("setvalue",e.options[i].name),s.className="comment-radio",n.appendChild(s),this.inputs.appendChild(n),this.options.push(s)}this.holder.appendChild(this.inputs),this.exportXMLDOM=function(e){var t=e.parent.document.createElement("comment");t.id=this.specification.id,t.setAttribute("type",this.specification.type);var i=document.createElement("question");i.textContent=this.string.textContent,t.appendChild(i),console.log("Comment: "+i.textContent);for(var n=0;n<this.options.length;n++){var o=document.createElement("response");o.textContent=this.options[n].checked,o.setAttribute("name",this.options[n].getAttribute("setvalue")),t.appendChild(o),console.log("Response "+o.getAttribute("name")+": "+o.textContent)}return e.XMLDOM.appendChild(t),t},this.resize=function(){var e=(window.innerWidth-100)/2;e>=600?e=600:e<400&&(e=400),this.holder.style.width=e+"px"},this.check=function(){var e=this.options.some(function(e){return e.checked});return!this.specification.mandatory||!1!==e},this.resize()},this.sliderBox=function(e){this.specification=e,this.holder=document.createElement("div"),this.holder.className="comment-div",this.string=document.createElement("span"),this.string.innerHTML=e.statement,this.slider=document.createElement("input"),this.slider.type="range",this.slider.min=e.min,this.slider.max=e.max,this.slider.step=e.step,this.slider.value=e.value;var t=document.createElement("br"),i=document.createElement("div");i.className="comment-slider-text-holder",this.leftText=document.createElement("span"),this.leftText.textContent=e.leftText,this.rightText=document.createElement("span"),this.rightText.textContent=e.rightText,i.appendChild(this.leftText),i.appendChild(this.rightText),this.holder.appendChild(this.string),this.holder.appendChild(t),this.holder.appendChild(this.slider),this.holder.appendChild(i),this.exportXMLDOM=function(e){var t=e.parent.document.createElement("comment");t.id=this.specification.id,t.setAttribute("type",this.specification.type),console.log("Question: "+this.string.textContent),console.log("Response: "+this.slider.value);var i=e.parent.document.createElement("question");i.textContent=this.string.textContent;var n=e.parent.document.createElement("response");return n.textContent=this.slider.value,t.appendChild(i),t.appendChild(n),e.XMLDOM.appendChild(t),t},this.resize=function(){var e=(window.innerWidth-100)/2;e>=600?e=600:e<400&&(e=400),this.holder.style.width=e+"px",this.slider.style.width=e-24+"px"},this.check=function(){return!0},this.resize()},this.createCommentQuestion=function(e){var t;return"question"==e.type?t=new this.commentBox(e):"radio"==e.type?t=new this.radioBox(e):"checkbox"==e.type?t=new this.checkboxBox(e):"slider"==e.type&&(t=new this.sliderBox(e)),this.commentQuestions.push(t),t},this.deleteCommentQuestions=function(){this.commentQuestions=[]},this.checkCommentQuestions=function(){if(0===this.commentQuestions.reduce(function(e,t){return!1===t.check()&&e.push(t),e},[]).length)return!0;interfaceContext.lightbox.post("Message","Not all the mandatory comment boxes below have been filled.")},this.outsideReferenceDOM=function(e,t,i){this.parent=e,this.outsideReferenceHolder=document.createElement("button"),this.outsideReferenceHolder.className="outside-reference",this.outsideReferenceHolder.setAttribute("track-id",t),this.outsideReferenceHolder.textContent=this.parent.specification.label||"Reference",this.outsideReferenceHolder.disabled=!0,this.handleEvent=function(e){audioEngineContext.play(this.parent.id)},this.outsideReferenceHolder.addEventListener("click",this),i.appendChild(this.outsideReferenceHolder),this.enable=function(){1==this.parent.state&&(this.outsideReferenceHolder.disabled=!1)},this.updateLoading=function(e){100!=e?(e=(e=String(e)).split(".")[0],this.outsideReferenceHolder.textContent=e+"%"):this.outsideReferenceHolder.textContent=this.parent.specification.label||"Reference"},this.startPlayback=function(){$(".track-slider").removeClass("track-slider-playing"),$(".comment-div").removeClass("comment-box-playing"),this.outsideReferenceHolder.style.backgroundColor="#FDD"},this.stopPlayback=function(){this.outsideReferenceHolder.style.backgroundColor=""},this.exportXMLDOM=function(e){return null},this.getValue=function(){return 0},this.getPresentedId=function(){return this.parent.specification.label||"Reference"},this.canMove=function(){return!1},this.error=function(){this.outsideReferenceHolder.textContent="Error",this.outsideReferenceHolder.style.backgroundColor="#F00"}},this.playhead=function(){var e={};e.object=document.createElement("div"),e.object.className="playhead",e.object.align="left";var t=document.createElement("div");return t.style.width="50px",e.curTimeSpan=document.createElement("span"),e.curTimeSpan.textContent="00:00",t.appendChild(e.curTimeSpan),e.object.appendChild(t),e.scrubberTrack=document.createElement("div"),e.scrubberTrack.className="playhead-scrub-track",e.scrubberHead=document.createElement("div"),e.scrubberHead.id="playhead-scrubber",e.scrubberTrack.appendChild(e.scrubberHead),e.object.appendChild(e.scrubberTrack),e.timePerPixel=0,e.maxTime=0,e.playbackObject=void 0,e.setTimePerPixel=function(e){this.playbackObject=e,this.maxTime=e.buffer.buffer.duration;this.timePerPixel=this.maxTime/490,this.maxTime<60?this.curTimeSpan.textContent="0.00":this.curTimeSpan.textContent="00:00"},e.update=function(){if(this.timePerPixel>0){var e=this.playbackObject.getCurrentPosition();if(e>0&&e<this.maxTime){var t=Math.floor(e/this.timePerPixel);if(this.scrubberHead.style.left=t+"px",this.maxTime>60){var i=e%60,n=Math.floor((e-i)/60);i=(i=i.toString()).substr(0,2),n=n.toString(),this.curTimeSpan.textContent=n+":"+i}else e=e.toString(),this.curTimeSpan.textContent=e.substr(0,4)}else this.scrubberHead.style.left="0px",this.maxTime<60?this.curTimeSpan.textContent="0.00":this.curTimeSpan.textContent="00:00"}void 0!==this.playbackObject&&void 0===this.interval&&window.requestAnimationFrame(this.update.bind(this))},e.interval=void 0,e.start=function(){void 0!==this.playbackObject&&void 0===this.interval&&window.requestAnimationFrame(this.update.bind(this))},e.stop=function(){this.timePerPixel=0},e}(),this.volume=function(){var e={};e.valueLin=1,e.valueDB=0,e.root=document.createElement("div"),e.root.id="master-volume-root",e.object=document.createElement("div"),e.object.className="master-volume-holder-float",e.object.appendChild(e.root),e.slider=document.createElement("input"),e.slider.id="master-volume-control",e.slider.type="range",e.valueText=document.createElement("span"),e.valueText.id="master-volume-feedback",e.valueText.textContent="0dB",e.slider.min=-60,e.slider.max=12,e.slider.value=0,e.slider.step=1,e.handleEvent=function(e){"mousemove"!=e.type&&"mouseup"!=e.type||(this.valueDB=Number(this.slider.value),this.valueLin=decibelToLinear(this.valueDB),this.valueText.textContent=this.valueDB+"dB",audioEngineContext.outputGain.gain.value=this.valueLin),"mouseup"==e.type&&this.onmouseup(),this.slider.value=this.valueDB,e.stopPropagation&&e.stopPropagation()},e.onmouseup=function(){var e=testState.currentStore.XMLDOM.getElementsByTagName("metric")[0].getAllElementsByName("volumeTracker");0===e.length?((e=storage.document.createElement("metricresult")).setAttribute("name","volumeTracker"),testState.currentStore.XMLDOM.getElementsByTagName("metric")[0].appendChild(e)):e=e[0];var t=storage.document.createElement("movement");t.setAttribute("test-time",audioEngineContext.timer.getTestTime()),t.setAttribute("volume",this.valueDB),t.setAttribute("format","dBFS"),e.appendChild(t)},e.slider.addEventListener("mousemove",e),e.root.addEventListener("mouseup",e);var t=document.createElement("div");return t.innerHTML="<span>Master Volume Control</span>",t.style.fontSize="0.75em",t.style.width="100%",t.align="center",e.root.appendChild(t),e.root.appendChild(e.slider),e.root.appendChild(e.valueText),e.resize=function(e){window.innerWidth<1e3?this.object.className="master-volume-holder-inline":this.object.className="master-volume-holder-float"},e}(),this.imageHolder=function(){var e={};return e.root=document.createElement("div"),e.root.id="imageController",e.img=document.createElement("img"),e.root.appendChild(e.img),e.setImage=function(t){e.img.src="","string"==typeof t&&void 0!==t.length&&(e.img.src=t)},e}(),this.calibrationModuleObject=null,this.calibrationModule=function(){this.storeDOM=storage.document.createElement("calibration"),storage.root.appendChild(this.storeDOM),this.calibrationNodes=[],this.holder=null,this.build=function(e){var t=62.5;for(this.holder=document.createElement("div"),this.holder.className="calibration-holder",this.calibrationNodes=[];t<2e4;){var i={root:document.createElement("div"),input:document.createElement("input"),oscillator:audioContext.createOscillator(),gain:audioContext.createGain(),f:t,parent:this,handleEvent:function(e){switch(e.type){case"mouseenter":this.oscillator.start(0);break;case"mouseleave":this.oscillator.stop(0),this.oscillator=audioContext.createOscillator(),this.oscillator.connect(this.gain),this.oscillator.frequency.value=this.f;break;case"mousemove":var t=Math.pow(10,this.input.value/20);1e3==this.f?(audioEngineContext.outputGain.gain.value=t,interfaceContext.volume.slider.value=this.input.value):this.gain.gain.value=t}},disconnect:function(){this.gain.disconnect()}};i.root.className="calibration-slider",i.root.appendChild(i.input),i.oscillator.connect(i.gain),i.gain.connect(audioEngineContext.outputGain),i.gain.gain.value=2*Math.random(),i.input.value=i.gain.gain.value,i.input.setAttribute("orient","vertical"),i.input.type="range",i.input.min=-12,i.input.max=0,i.input.step=.25,1e3!=t?i.input.value=12*Math.random()-6:(i.input.value=0,i.root.style.backgroundColor="rgb(255,125,125)"),i.input.addEventListener("mousemove",i),i.input.addEventListener("mouseenter",i),i.input.addEventListener("mouseleave",i),i.gain.gain.value=Math.pow(10,i.input.value/20),i.oscillator.frequency.value=t,this.calibrationNodes.push(i),this.holder.appendChild(i.root),t*=2}e.appendChild(this.holder)},this.collect=function(){this.calibrationNodes.forEach(function(e){var t=storage.document.createElement("calibrationresult");t.setAttribute("frequency",e.f),t.setAttribute("range-min",e.input.min),t.setAttribute("range-max",e.input.max),t.setAttribute("gain-lin",e.gain.gain.value),this.storeDOM.appendChild(t)},this)}},this.checkHiddenAnchor=function(e){return!audioEngineContext.audioObjects.filter(function(e){return"anchor"===e.specification.type}).some(function(e){return e.interfaceDOM.getValue()>e.specification.marker/100&&e.specification.marker>0})||(console.log("Anchor node not below marker value"),e?interfaceContext.lightbox.post("Message",e):interfaceContext.lightbox.post("Message","Please keep listening"),this.storeErrorNode("Anchor node not below marker value"),!1)},this.checkHiddenReference=function(e){return!audioEngineContext.audioObjects.filter(function(e){return"reference"===e.specification.type}).some(function(e){return e.interfaceDOM.getValue()<e.specification.marker/100&&e.specification.marker>0})||(console.log("Reference node not below marker value"),e?interfaceContext.lightbox.post("Message",e):interfaceContext.lightbox.post("Message","Please keep listening"),this.storeErrorNode("Reference node not below marker value"),!1)},this.checkFragmentsFullyPlayed=function(e){if(audioEngineContext.loopPlayback)return console.log("WARNING - Looped source: Cannot check fragments are fully played"),!0;var t,i=!0,n=[];for(t=0;t<audioEngineContext.audioObjects.length;t++){for(var o=audioEngineContext.audioObjects[t],s=o.buffer.buffer.duration,r=o.metric,a=!1,c=0;c<r.listenTracker.length;c++){var l=r.listenTracker[c].getElementsByTagName("testtime"),u=Number(l[0].getAttribute("start"));if(Number(l[0].getAttribute("stop"))-u>=s){a=!0;break}}!1===a&&(i=!1,console.log("Continue listening to track-"+o.interfaceDOM.getPresentedId()),n.push(o.interfaceDOM.getPresentedId()))}if(!1===i){var h="You have not completely listened to fragments ";for(t=0;t<n.length;t++)h+=n[t],t!=n.length-1&&(h+=", ");return h+=". 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\ No newline at end of file
diff -r cb227441a102 -r a8455b0766cd js/min/jquery-2.1.4.min.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/min/jquery-2.1.4.min.js	Wed Nov 28 13:51:51 2018 +0000
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diff -r cb227441a102 -r a8455b0766cd js/min/loader.min.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/min/loader.min.js	Wed Nov 28 13:51:51 2018 +0000
@@ -0,0 +1,1 @@
+window.onload=function(){if(void 0===window.AudioContext&&void 0===window.webkitAudioContext){var e=document.getElementsByTagName("body")[0];e.innerHTML="<h1>Sorry! Your browser is not supported :(</h1><p>Your browser does not support the HTML5 Web Audio API. Please use one of the following supported browsers instead.<p>";var t=document.createElement("table");t.border="0",t.innerHTML="<tr><td>Chrome</td><td>v10 or newer</td></tr>",t.innerHTML+="<tr><td>Firefox</td><td>v25 or newer</td></tr><tr><td>Safari (OSX)</td><td> v6 or newer, OSX only</td></tr>",t.innerHTML+="<tr><td>Safari (iOS)</td><td>iOS 6.1 or newer</td></tr>",t.innerHTML+="<tr><td>Edge</td><td>12 or newer</td></tr>",e.appendChild(t)}else for(var r=document.getElementsByTagName("head")[0],d=["js/specification.js","js/core.js","js/loudness.js","js/xmllint.js","js/WAVE.js"],o=0;o<d.length;o++){var n=d[o],i=document.createElement("script");i.type="text/javascript",i.async=!1,i.defer=!0,i.src=n,r.appendChild(i)}};
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diff -r cb227441a102 -r a8455b0766cd js/min/loudness.min.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/min/loudness.min.js	Wed Nov 28 13:51:51 2018 +0000
@@ -0,0 +1,1 @@
+function calculateLoudness(e,a,r,n){if("iPad"!=navigator.platform&&"iPhone"!=navigator.platform||e.ready(),void 0===e)return 0;void 0===a&&(a="I"),void 0===r&&(r=-23),void 0===n&&(n=new OfflineAudioContext(audioContext.destination.channelCount,Math.max(.4,e.buffer.duration)*audioContext.sampleRate,audioContext.sampleRate));var t=n.createBiquadFilter();t.type="highshelf",t.gain.value=4,t.frequency.value=1500;var o=n.createBiquadFilter();o.type="highpass",o.Q.value=.5,o.frequency.value=38;var l=n.createBufferSource();l.buffer=e.buffer,l.connect(t),t.connect(o),o.connect(n.destination),n.oncomplete=function(r){switch("object"==typeof r.renderedBuffer&&(r=r.renderedBuffer),a){case"I":var n=calculateMeanSquared(r,.4,.75),t=calculateLoudnessFromBlocks(n),o=loudnessOfBlocks(loudnessGate(t,n,loudnessOfBlocks(loudnessGate(t,n,-70))-10));e.buffer.lufs=o}e.ready()},l.start(0),n.startRendering()}function calculateMeanSquared(e,a,r){var n=Math.floor(e.sampleRate*a),t=Math.floor(n*(1-r)),o=Math.floor((e.length-n)/t);o=Math.max(o,1);for(var l=Array(e.numberOfChannels),u=0;u<e.numberOfChannels;u++){l[u]=new Float32Array(o);for(var f=e.getChannelData(u),i=0;i<o;i++){l[u][i]=0;for(var s=0;s<n;s++){var c=i*t+s;if(c>=e.length)break;var d=f[c];l[u][i]+=d*d}l[u][i]/=n}}return l}function calculateLoudnessFromBlocks(e){for(var a=e[0].length,r=e.length,n=Array(a),t=0;t<a;t++){for(var o=0,l=0;l<r;l++){var u=1;u>=3&&(u=1.41),o+=e[l][t]*u}n[t]=10*Math.log10(o)-.691}return n}function loudnessGate(e,a,r){var n,t,o=a[0].length,l=a.length,u=Array(l);for(t=0;t<l;t++)u[t]=[];for(n=0;n<o;n++)if(e[n]>r)for(t=0;t<l;t++)u[t].push(a[t][n]);return u}function loudnessOfBlocks(e){for(var a=e[0].length,r=e.length,n=0,t=0;t<a;t++){for(var o=0,l=0;l<r;l++){var u=1;u>=3&&(u=1.41),o+=e[l][t]*u}n+=o/=a}return n=10*Math.log10(n)-.691}var interval_cal_loudness_event=null;if(void 0===OfflineAudioContext)var OfflineAudioContext=webkitOfflineAudioContext;
\ No newline at end of file
diff -r cb227441a102 -r a8455b0766cd js/min/specification.min.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/min/specification.min.js	Wed Nov 28 13:51:51 2018 +0000
@@ -0,0 +1,1 @@
+function Specification(){function t(t){this.location=void 0,this.options=[],this.parent=void 0,this.showBackButton=!0,this.specification=t,this.addOption=function(){var t=new this.OptionNode(this.specification);return this.options.push(t),t},this.OptionNode=function(t){this.type=void 0,this.schema=void 0,this.id=void 0,this.name=void 0,this.mandatory=void 0,this.statement=void 0,this.boxsize=void 0,this.options=[],this.min=void 0,this.max=void 0,this.minWait=void 0,this.step=void 0,this.conditions=[],this.decode=function(t,e){this.schema=s.querySelector("[name="+e.nodeName+"]");var i,n=this.schema.querySelectorAll("attribute");for(i in n){if(!0===isNaN(Number(i)))break;var r=n[i].getAttribute("name")||n[i].getAttribute("ref"),o=e.getAttribute(r);null!==(o=a(o,n[i]))&&(this[r]=o)}if("surveyentry"==e.nodeName){if(console.log("NOTE - Use of <surveyelement> is now deprecated. 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r(i);return this.audioElements.push(t),t},this.decode=function(t,i){this.parent=t;var s,o,h=this.schema.querySelectorAll("attribute");for(s=0;s<h.length;s++){var l=h[s].getAttribute("name")||h[s].getAttribute("ref"),m=i.getAttribute(l);null!==(m=a(m,h[s]))&&(this[l]=m)}var c=i.getElementsByTagName("title");0!==c.length&&c[0].parentElement==i&&(this.title=c[0].textContent);var d=i.getElementsByTagName("commentboxprefix");0!==d.length&&d[0].parentElement==i&&(this.commentBoxPrefix=d[0].textContent);var u=i.getElementsByTagName("interface");for(s=0;s<u.length;s++)(o=new e(this.specification)).decode(this,u[s],t.schema.querySelectorAll("[name=interface]")[1]),this.interfaces.push(o);var p=i.getElementsByTagName("survey"),g=t.schema.querySelector("[name=survey]");for(s=0;s<p.length;s++){var v=p[s].getAttribute("location");"pre"==v||"before"==v?0!==this.preTest.options.length?this.errors.push("Already a pre/before test survey defined! Ignoring second!!"):this.preTest.decode(t,p[s],g):"post"!=v&&"after"!=v||(0!==this.postTest.options.length?this.errors.push("Already a post/after test survey defined! Ignoring second!!"):this.postTest.decode(t,p[s],g))}var f=i.getElementsByTagName("audioelement");for(s=0;s<f.length;s++){var b=new r(this.specification);b.decode(this,f[s]),this.audioElements.push(b)}var x=i.getElementsByTagName("commentquestions");if(0!==x.length)for(var y=(x=x[0]).firstElementChild;y;)(o=new n(this.specification)).decode(t,y),this.commentQuestions.push(o),y=y.nextElementSibling},this.encode=function(t){var e,i=t.createElement("page"),s=this.schema.querySelectorAll("attribute");for(e=0;e<s.length;e++){var n=s[e].getAttribute("name");null===n&&(n=s[e].getAttribute("ref")),void 0===this[n]&&"required"!=s[e].getAttribute("use")||i.setAttribute(n,this[n])}var a=t.createElement("commentboxprefix");for(a.textContent=this.commentBoxPrefix,i.appendChild(a),e=0;e<this.interfaces.length;e++)i.appendChild(this.interfaces[e].encode(t));for(e=0;e<this.audioElements.length;e++)i.appendChild(this.audioElements[e].encode(t));if(this.commentQuestions.length>0){var r=t.createElement("commentquestions");for(e=0;e<this.commentQuestions.length;e++)r.appendChild(this.commentQuestions[e].encode(t));i.appendChild(r)}return i.appendChild(this.preTest.encode(t)),i.appendChild(this.postTest.encode(t)),i}}var s,n;this.interface=void 0,this.projectReturn=void 0,this.returnURL=void 0,this.randomiseOrder=void 0,this.poolSize=void 0,this.loudness=void 0,this.sampleRate=void 0,this.calibration=void 0,this.crossFade=void 0,this.preSilence=void 0,this.postSilence=void 0,this.playOne=void 0,this.minNumberPlays=void 0,this.maxNumberPlays=void 0,this.randomiseAxisOrder=void 0,this.metrics=new function(){this.enabled=[],this.decode=function(t,e){var i=e.getElementsByTagName("metricenable");for(var s in i){if(!0===isNaN(Number(s)))break;this.enabled.push(i[s].textContent)}},this.encode=function(t){var e=t.createElement("metric");for(var i in this.enabled){if(!0===isNaN(Number(i)))break;var s=t.createElement("metricenable");s.textContent=this.enabled[i],e.appendChild(s)}return e}},this.preTest=new t(this),this.postTest=new t(this),this.preTest.location="pre",this.postTest.location="post",this.pages=[],this.interfaces=new e(this),this.errors=[],this.exitText="Thank you.",this.createNewPage=function(){var t=new i(this);return this.pages.push(t),t};var a=function(t,e){null===e.getAttribute("name")&&void 0!==e.getAttribute("ref")&&(e=s.querySelector("[name="+e.getAttribute("ref")+"]"));var i=e.getAttribute("default");null===t&&(t=i);var n=e.getAttribute("type");if("string"==typeof n)n=n.substr(3);else{var a=e.querySelectorAll("restriction,enumeration");n=a.length>0&&"string"==typeof(n=a[0].getAttribute("base"))?n.substr(3):"string"}if(null===t)return t;switch(n){case"boolean":t="true"==t;break;case"negativeInteger":case"positiveInteger":case"nonNegativeInteger":case"nonPositiveInteger":case"integer":case"decimal":case"short":t=Number(t);break;default:t=String(t)}return t};this.processSchema=function(t){if(void 0===s){n=t;var e=new DOMParser;s=e.parseFromString(n,"text/xml"),Object.defineProperties(this,{schema:{value:s},schemaString:{value:n}})}},this.getSchema=function(){return s},this.getSchemaString=function(){return n},this.decode=function(t){s=this.schema,this.errors=[],this.projectXML=t.childNodes[0];var e,n=t.getElementsByTagName("setup")[0],r=s.querySelector("[name=setup]").querySelectorAll("attribute");for(e=0;e<r.length;e++){var o=r[e].getAttribute("name")||r[e].getAttribute("ref"),h=n.getAttribute(o);null!==(h=a(h,r[e]))&&(this[o]=h)}var l=n.getElementsByTagName("exitText");1==l.length&&(this.exitText=l[0].textContent),this.metrics.decode(this,n.getElementsByTagName("metric")[0]);var m=n.getElementsByTagName("survey");for(e=0;e<m.length;e++){switch(m[e].getAttribute("location")){case"pre":case"before":this.preTest.decode(this,m[e]);break;case"post":case"after":this.postTest.decode(this,m[e])}}var c=n.getElementsByTagName("interface");c.length>1&&this.errors.push("Only one <interface> node in the <setup> node allowed! Others except first ingnored!"),0!==c.length&&(c=c[0],this.interfaces.decode(this,c,this.schema.querySelectorAll("[name=interface]")[1]));var d=t.getElementsByTagName("page"),u=this.schema.querySelector("[name=page]");for(e=0;e<d.length;e++){var p=new i(this);p.decode(this,d[e],u),this.pages.push(p);for(var g=0;g<p.repeatCount;g++){var v=new i(this);v.decode(this,d[e],u),v.id+="-repeat-"+g,this.pages.push(v)}}},this.encode=function(){var t=document.implementation.createDocument(null,"waet"),e=t.firstChild;e.setAttribute("xmlns:xsi","http://www.w3.org/2001/XMLSchema-instance"),e.setAttribute("xsi:noNamespaceSchemaLocation","test-schema.xsd");for(var i=t.createElement("setup"),n=s.querySelector("[name=setup]").querySelectorAll("attribute"),a=0;a<n.length;a++){var r=n[a].getAttribute("name");null===r&&(r=n[a].getAttribute("ref")),void 0===this[r]&&"required"!=n[a].getAttribute("use")||i.setAttribute(r,this[r])}if(e.appendChild(i),null!==this.exitText){var o=t.createElement("exitText");o.textContent=this.exitText,i.appendChild(o)}return i.appendChild(this.preTest.encode(t)),i.appendChild(this.postTest.encode(t)),i.appendChild(this.metrics.encode(t)),i.appendChild(this.interfaces.encode(t)),this.pages.forEach(function(i){e.appendChild(i.encode(t))}),t}}
\ No newline at end of file
diff -r cb227441a102 -r a8455b0766cd js/specification.js
--- a/js/specification.js	Wed Nov 28 13:50:22 2018 +0000
+++ b/js/specification.js	Wed Nov 28 13:51:51 2018 +0000
@@ -12,13 +12,13 @@
     this.poolSize = undefined;
     this.loudness = undefined;
     this.sampleRate = undefined;
-    this.calibration = undefined;
     this.crossFade = undefined;
     this.preSilence = undefined;
     this.postSilence = undefined;
     this.playOne = undefined;
     this.minNumberPlays = undefined;
     this.maxNumberPlays = undefined;
+    this.randomiseAxisOrder = undefined;
 
     // nodes
     this.metrics = new metricNode();
@@ -130,7 +130,9 @@
             if (projectAttr !== null) {
                 this[attributeName] = projectAttr;
             }
-
+        }
+        if (projectXML.getElementsByTagName('calibration').length > 0) {
+            this.calibration.decode(this, projectXML.getElementsByTagName('calibration')[0]);
         }
 
         var exitTextNode = setupNode.getElementsByTagName('exitText');
@@ -208,6 +210,7 @@
             exitTextNode.textContent = this.exitText;
             setup.appendChild(exitTextNode);
         }
+        setup.appendChild(this.calibration.encode(RootDocument));
         setup.appendChild(this.preTest.encode(RootDocument));
         setup.appendChild(this.postTest.encode(RootDocument));
         setup.appendChild(this.metrics.encode(RootDocument));
@@ -218,10 +221,88 @@
         return RootDocument;
     };
 
+    this.calibration = (function () {
+        var frequencies = false,
+            levels = false,
+            channels = false,
+            schema = undefined;
+        var Calibration = {};
+        Object.defineProperties(Calibration, {
+            "parent": {
+                "value": this
+            },
+            "schema": {
+                "get": function () {
+                    return schema;
+                },
+                "set": function (t) {
+                    if (schema === undefined) {
+                        schema = t;
+                    } else {
+                        throw ("Cannot set readonly");
+                    }
+                }
+            },
+            "checkFrequencies": {
+                "get": function () {
+                    return frequencies;
+                },
+                "set": function (t) {
+                    frequencies = (t === true);
+                }
+            },
+            "checkLevels": {
+                "get": function () {
+                    return levels;
+                },
+                "set": function (t) {
+                    levels = (t === true);
+                }
+            },
+            "checkChannels": {
+                "get": function () {
+                    return channels;
+                },
+                "set": function (t) {
+                    channels = (t === true);
+                }
+            },
+            "encode": {
+                "value": function (doc) {
+                    var node = doc.createElement("calibration");
+                    node.setAttribute("checkFrequencies", frequencies);
+                    node.setAttribute("checkLevels", levels);
+                    node.setAttribute("checkChannels", channels);
+                    return node;
+                }
+            },
+            "decode": {
+                "value": function (parent, xml) {
+                    this.schema = schemaRoot.querySelector("[name=calibration]");
+                    var attributeMap = this.schema.querySelectorAll('attribute'),
+                        i;
+                    for (i in attributeMap) {
+                        if (isNaN(Number(i)) === true) {
+                            break;
+                        }
+                        var attributeName = attributeMap[i].getAttribute('name') || attributeMap[i].getAttribute('ref');
+                        var projectAttr = xml.getAttribute(attributeName);
+                        projectAttr = processAttribute(projectAttr, attributeMap[i]);
+                        if (projectAttr !== null) {
+                            this[attributeName] = projectAttr;
+                        }
+                    }
+                }
+            }
+        });
+        return Calibration;
+    })();
+
     function surveyNode(specification) {
         this.location = undefined;
         this.options = [];
         this.parent = undefined;
+        this.showBackButton = true;
         this.specification = specification;
 
         this.addOption = function () {
@@ -409,6 +490,12 @@
             } else if (this.location == 'after') {
                 this.location = 'post';
             }
+            this.showBackButton = xml.getAttribute("showBackButton");
+            if (this.showBackButton == "false") {
+                this.showBackButton = false;
+            } else {
+                this.showBackButton = true;
+            }
             var child = xml.firstElementChild;
             while (child) {
                 var node = new this.OptionNode(this.specification);
@@ -424,6 +511,7 @@
         this.encode = function (doc) {
             var node = doc.createElement('survey');
             node.setAttribute('location', this.location);
+            node.setAttribute('showBackButton', this.showBackButton);
             for (var i = 0; i < this.options.length; i++) {
                 node.appendChild(this.options[i].exportXML(doc));
             }
@@ -572,6 +660,7 @@
         this.commentBoxPrefix = "Comment on track";
         this.minNumberPlays = undefined;
         this.maxNumberPlays = undefined;
+        this.randomiseAxisOrder = undefined;
         this.audioElements = [];
         this.commentQuestions = [];
         this.schema = schemaRoot.querySelector("[name=page]");
@@ -696,8 +785,12 @@
                 AHNode.appendChild(this.audioElements[i].encode(root));
             }
             // Create <CommentQuestion>
-            for (i = 0; i < this.commentQuestions.length; i++) {
-                AHNode.appendChild(this.commentQuestions[i].encode(root));
+            if (this.commentQuestions.length > 0) {
+                var node = root.createElement("commentquestions");
+                for (i = 0; i < this.commentQuestions.length; i++) {
+                    node.appendChild(this.commentQuestions[i].encode(root));
+                }
+                AHNode.appendChild(node);
             }
 
             AHNode.appendChild(this.preTest.encode(root));
@@ -710,10 +803,12 @@
             this.name = undefined;
             this.type = undefined;
             this.statement = undefined;
+            this.mandatory = undefined;
             this.schema = schemaRoot.querySelector('[name=commentquestion]');
             this.decode = function (parent, xml) {
                 this.id = xml.id;
                 this.name = xml.getAttribute('name');
+                this.mandatory = xml.getAttribute("mandatory") == "true";
                 if (this.name === null) {
                     this.name = undefined;
                 }
@@ -794,6 +889,7 @@
                         throw ("Unknown type " + this.type);
                 }
                 node.id = this.id;
+                node.setAttribute("mandatory", this.mandatory);
                 node.setAttribute("type", this.type);
                 if (this.name !== undefined) {
                     node.setAttribute("name", this.name);
diff -r cb227441a102 -r a8455b0766cd php/pseudo.php
--- a/php/pseudo.php	Wed Nov 28 13:50:22 2018 +0000
+++ b/php/pseudo.php	Wed Nov 28 13:51:51 2018 +0000
@@ -1,24 +1,37 @@
 <?php
-    header('Access-Control-Allow-Origin: *');
-	header("Content-type: text/xml");
-    header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
-    header("Cache-Control: post-check=0, pre-check=0", false);
-    header("Pragma: no-cache");
-    $files = glob('../saves/' . '*.xml');
-    $numsaves = 0;
-    if ( $files !== false )
-    {
-        $numsaves = count( $files );
-    }
+header('Access-Control-Allow-Origin: *');
+header("Content-type: text/xml");
+header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
+header("Cache-Control: post-check=0, pre-check=0", false);
+header("Pragma: no-cache");
 
-    $files = glob('../tests/' . '*.xml');
-    $numtests = 0;
-    if ( $numtests !== false )
-    {
-        $numtests = count( $files );
-    }
+if (isset($_GET["prefix"]) == FALSE) {
+    $prefix = "";
+} else {
+    $prefix = $_GET["prefix"];
+}
 
-    $testID = ($numsaves % $numtests);
+if (isset($_GET["dir"]) == FALSE) {
+    $dir = "";
+} else {
+    $dir = $_GET["dir"];
+}
 
-	readfile($files[$testID]);
+$files = glob('../saves/' . $prefix . '*.xml');
+$numsaves = 0;
+if ( $files !== false )
+{
+    $numsaves = count( $files );
+}
+
+$files = glob('../tests/' . $dir . '*.xml');
+$numtests = 0;
+
+if ( $numtests !== false )
+{
+    $numtests = count( $files );
+}
+
+$testID = ($numsaves % $numtests);
+readfile($files[$testID]);
 ?>
diff -r cb227441a102 -r a8455b0766cd php/requestKey.php
--- a/php/requestKey.php	Wed Nov 28 13:50:22 2018 +0000
+++ b/php/requestKey.php	Wed Nov 28 13:51:51 2018 +0000
@@ -11,6 +11,10 @@
     return $randomString;
 }
 
+if (!file_exists("../saves")) {
+    mkdir("../saves");
+}
+
 // Request a new session key from the server
 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
 header("Cache-Control: post-check=0, pre-check=0", false);
diff -r cb227441a102 -r a8455b0766cd php/save.php
--- a/php/save.php	Wed Nov 28 13:50:22 2018 +0000
+++ b/php/save.php	Wed Nov 28 13:51:51 2018 +0000
@@ -33,7 +33,17 @@
 }
 $postText = file_get_contents('php://input');
 $file_key = $_GET['key'];
-$filename = '../saves/'.$saveFilenamePrefix.$file_key.".xml";
+
+$update = false;
+if (isset($_GET["update"])) {
+    $update = $_GET["update"] == "update";
+}
+
+if ($update) {
+    $filename = '../saves/update-'.$saveFilenamePrefix.$file_key.".xml";
+} else {
+    $filename = '../saves/'.$saveFilenamePrefix.$file_key.".xml";
+}
 
 if (!file_exists($filename)) {
     die('<response state="error"><message>Could not find save</message></response>');
@@ -132,4 +142,8 @@
 // Return XML confirmation data
 $xml = '<response state="OK"><message>OK</message><file bytes="'.$wbytes.'">"'.$filename.'"</file></response>';
 echo $xml;
+
+if (!$update) {
+    unlink('../saves/update-'.$saveFilenamePrefix.$file_key.".xml");
+}
 ?>
diff -r cb227441a102 -r a8455b0766cd python/generate_report.py
--- a/python/generate_report.py	Wed Nov 28 13:50:22 2018 +0000
+++ b/python/generate_report.py	Wed Nov 28 13:51:51 2018 +0000
@@ -232,17 +232,18 @@
             
             # number of comments (interesting if comments not mandatory)
             for audioelement in audioelements:
-                response = audioelement.find("./comment/response")
-                was_played = audioelement.find("./metric/metricresult/[@name='elementFlagListenedTo']")
-                was_moved = audioelement.find("./metric/metricresult/[@name='elementFlagMoved']")
-                if response is not None and response.text is not None and len(response.text) > 1: 
-                    number_of_comments += 1
-                else: 
-                    number_of_missing_comments += 1
-                if was_played is not None and was_played.text == 'false': 
-                    not_played.append(audioelement.get('name'))
-                if was_moved is not None and was_moved.text == 'false': 
-                    not_moved.append(audioelement.get('name'))
+                if audioelement.get("type") != "outside-reference":
+                    response = audioelement.find("./comment/response")
+                    was_played = audioelement.find("./metric/metricresult/[@name='elementFlagListenedTo']")
+                    was_moved = audioelement.find("./metric/metricresult/[@name='elementFlagMoved']")
+                    if response is not None and response.text is not None and len(response.text) > 1: 
+                        number_of_comments += 1
+                    else: 
+                        number_of_missing_comments += 1
+                    if was_played is not None and was_played.text == 'false': 
+                        not_played.append(audioelement.get('name'))
+                    if was_moved is not None and was_moved.text == 'false': 
+                        not_moved.append(audioelement.get('name'))
             
             # update global counters
             total_empty_comments += number_of_missing_comments
diff -r cb227441a102 -r a8455b0766cd python/pythonServer.py
--- a/python/pythonServer.py	Wed Nov 28 13:50:22 2018 +0000
+++ b/python/pythonServer.py	Wed Nov 28 13:51:51 2018 +0000
@@ -13,6 +13,7 @@
 import copy
 import string
 import random
+import errno
 
 if sys.version_info[0] == 2:
     # Version 2.x
@@ -28,6 +29,12 @@
 scriptdir = os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe()))) # script directory
 os.chdir(scriptdir) # does this work?
 
+try:
+    os.makedirs("../saves")
+except OSError as e:
+    if e.errno != errno.EEXIST:
+        raise
+
 PSEUDO_PATH = '../tests/'
 pseudo_files = []
 pseudo_index = 0
@@ -147,12 +154,15 @@
     global curSaveIndex
     options = self.path.rsplit('?')
     options = options[1].rsplit('&')
+    update = False
     for option in options:
         optionPair = option.rsplit('=')
         if optionPair[0] == "key":
             key = optionPair[1]
         elif optionPair[0] == "saveFilenamePrefix":
             prefix = optionPair[1]
+        elif optionPair[0] == "state":
+            update = optionPair[1] == "update"
     if key == None:
         self.send_response(404)
         return
@@ -162,6 +172,8 @@
     postVars = self.rfile.read(varLen)
     print("Saving file key "+key)
     filename = prefix+'-'+key+'.xml'
+    if update:
+        filename = "update-"+filename
     file = open('../saves/'+filename,'wb')
     file.write(postVars)
     file.close()
@@ -182,6 +194,9 @@
         self.wfile.write(bytes(reply, "utf-8"))
     curSaveIndex += 1
     curFileName = 'test-'+str(curSaveIndex)+'.xml'
+    if update == False:
+        if(os.path.isfile("../saves/update-"+filename)):
+            os.remove("../saves/update-"+filename)
     
 def testSave(self):
     self.send_response(200)
@@ -210,7 +225,6 @@
         self.wfile.write(message)
     elif sys.version_info[0] == 3:
         self.wfile.write(bytes(message, "utf-8"))
-    
 
 def poolXML(s):
     pool = ET.parse('../tests/pool.xml')
diff -r cb227441a102 -r a8455b0766cd python/score_plot.py
--- a/python/score_plot.py	Wed Nov 28 13:50:22 2018 +0000
+++ b/python/score_plot.py	Wed Nov 28 13:51:51 2018 +0000
@@ -20,6 +20,7 @@
 # initialise plot types (false by default) and options
 enable_boxplot    = False     # show box plot
 enable_confidence = False     # show confidence interval
+enable_combined   = False     # show combined plots
 confidence        = 0.90      # confidence value (for confidence interval plot)
 enable_individual = False     # show all individual ratings
 show_individual   = []        # show specific individuals (empty: show all individuals found)
@@ -69,7 +70,8 @@
             #TODO add confidence value input
         elif arg == 'ind' or arg == 'individual' or arg == '-i':
             enable_individual = True     # show all individual ratings
-            
+        elif arg == 'comb' or arg == 'combined' or arg == '-m':
+            enable_combined   = True     # show combined plot with error bars  
         # PLOT OPTIONS
         elif arg == 'leg' or arg == 'legend' or arg == '-l':
             if not enable_individual: 
@@ -91,7 +93,8 @@
              rating_folder = arg
 
 # at least one plot type should be selected: box plot by default
-if not enable_boxplot and not enable_confidence and not enable_individual:
+if not enable_boxplot and not enable_confidence and not enable_individual and not enable_combined:
+    print("Default to enable boxplot")
     enable_boxplot = True
 
 # check if folder_name exists
@@ -113,6 +116,7 @@
 
 
 # CODE
+combined = {}
 
 # get every csv file in folder
 for file in os.listdir(rating_folder):
@@ -209,25 +213,44 @@
                                        numpoints=1 # remove extra marker
                                        )
                     increment += 1 # increase counter
+        if enable_combined:
+            print(page_name)
+            combined[page_name] = {"labels": headerrow, "r": ratings}
 
-        # TITLE, AXIS LABELS AND LIMITS
-        plt.title(page_name)
-        plt.xlabel('Fragment')
-        plt.xlim(0, len(headerrow)+1) # only show relevant region, leave space left & right)
-        plt.xticks(range(1, len(headerrow)+1), headerrow, rotation=90) # show fragment names
-        plt.ylabel('Rating')
-        plt.ylim(0,1)
-        
-        
-
-        # SHOW PLOT
-        #plt.show()
-        #exit()
+        if enable_boxplot or enable_confidence or enable_individual:
+            # TITLE, AXIS LABELS AND LIMITS
+            plt.title(page_name)
+            plt.xlabel('Fragment')
+            plt.xlim(0, len(headerrow)+1) # only show relevant region, leave space left & right)
+            plt.xticks(range(1, len(headerrow)+1), headerrow, rotation=90) # show fragment names
+            plt.ylabel('Rating')
+            plt.ylim(0,1)
+            # SHOW PLOT
+            #plt.show()
+            #exit()
     
-        # SAVE PLOT
-        # automatically 
-        plot_type = ("-box" if enable_boxplot else "") + \
+            # SAVE PLOT
+            # automatically 
+            plot_type = ("-box" if enable_boxplot else "") + \
                     ("-conf" if enable_confidence else "") + \
                     ("-ind" if enable_individual else "")
-        plt.savefig(rating_folder+page_name+plot_type+".pdf", bbox_inches='tight')
-        plt.close()
+            plt.savefig(rating_folder+page_name+plot_type+".pdf", bbox_inches='tight')
+            plt.close()
+
+if enable_combined:
+    plt.figure()
+    pages = combined.keys()
+    numcombined = len(pages)
+    spacing = 1.0/float(numcombined+2)
+    for i in range(0,numcombined):
+        page_name = pages[i]
+        N = len(combined[page_name]['labels'])
+        mean = np.percentile(combined[page_name]['r'], 50, 0)
+        p25 = np.percentile(combined[page_name]['r'], 25, 0)
+        p75 = np.percentile(combined[page_name]['r'], 75, 0)
+        yerr = [mean-p25, p75-mean]
+        print(yerr)
+        plt.errorbar(np.arange(0,N)+(spacing*(i+1)), combined[page_name]['r'].mean(0), yerr=yerr, fmt='x', elinewidth=0.5)
+    ax = plt.gca()
+    ax.grid(which='major', axis='x', linewidth=2, color='k')
+    plt.show()
diff -r cb227441a102 -r a8455b0766cd test.html
--- a/test.html	Wed Nov 28 13:50:22 2018 +0000
+++ b/test.html	Wed Nov 28 13:51:51 2018 +0000
@@ -14,12 +14,14 @@
     <meta name="author" content="" />
 
     <!-- Load up the default core JS and CSS files-->
+    <link rel="stylesheet" type="text/css" href="css/bootstrap.min.css">
     <link rel='stylesheet' type='text/css' href='css/core.css'>
     <!-- Use jQuery hosted from Google CDN -->
     <!--<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>-->
     <script type="text/javascript" src="js/showdown.min.js"></script>
     <script type="text/javascript" src="js/jquery-2.1.4.js"></script>
     <script type="text/javascript" src="js/loader.js"></script>
+    <script type="text/javascript" src="js/bootstrap.min.js"></script>
 </head>
 
 <body>
@@ -37,7 +39,7 @@
         <button id="popup-previous" class="popupButton">Back</button>
     </div>
     <div class="testHalt" style="visibility: hidden"></div>
-    <div id="footer"><a target="_blank" href="https://github.com/BrechtDeMan/WebAudioEvaluationTool">Web Audio Evaluation Toolbox (v1.2.2)</a></div>
+    <div id="footer"><a target="_blank" href="https://github.com/BrechtDeMan/WebAudioEvaluationTool">Web Audio Evaluation Toolbox (v1.2.3)</a></div>
 </body>
 
 </html>
diff -r cb227441a102 -r a8455b0766cd test_create.html
--- a/test_create.html	Wed Nov 28 13:50:22 2018 +0000
+++ b/test_create.html	Wed Nov 28 13:51:51 2018 +0000
@@ -19,7 +19,7 @@
     <div class="container">
         <div id="pageRoot">
             <h1>Web Audio Evaluation Tool</h1>
-            <h3>Test Creator <span class="label label-primary">v1.2.2</span></h3>
+            <h3>Test Creator <span class="label label-primary">v1.2.3</span></h3>
         </div>
         <button type="button" class="btn btn-info" ng-click="validate()">Validate</button>
         <button type="button" class="btn btn-success" ng-click="exportXML()" ng-disabled="validated == false">Export XML</button>
@@ -74,10 +74,6 @@
                     <span>Fixed Sampling Rate: </span>
                     <input type="number" ng-model="specification.sampleRate" min="0" placeholder="{{placeholder('sampleRate')}}" />
                 </div>
-                <div class="attribute" data-container="body" data-toggle="popover" data-placement="bottom" data-trigger="hover" data-content="Show a 'method of adjustment' audio calibration before testing.">
-                    <span>Pre-Test audio calibration: </span>
-                    <input type="checkbox" ng-model="specification.calibration" />
-                </div>
                 <div class="attribute" data-container="body" data-toggle="popover" data-placement="bottom" data-trigger="hover" data-content="Default cross-fade time when switching between elements. Can be over-ridden on each page">
                     <span>Global Cross-fade time: </span>
                     <input type="number" ng-model="specification.crossFade" min="0" step="0.1" placeholder="{{placeholder('crossFade')}}" />
@@ -107,6 +103,23 @@
                 <h2>Test Completed Message</h2>
                 <textarea ng-model="specification.exitText" data-container="body" data-toggle="popover" data-placement="bottom" data-trigger="hover" data-content="Once the test is completed, you can show a message to the user. Markdown syntax is supported for formatting."></textarea>
             </div>
+            <div class="node">
+                <h2>Pre-Test Calibrations</h2>
+                <div class="attributes">
+                    <div class="attribute" data-container="body" data-toggle="popover" data-placement="bottom" data-trigger="hover" data-content="Perform a frequency listening response">
+                        <span>Check Frequency Response</span>
+                        <input type="checkbox" value="testTimer" ng-model="specification.calibration.checkFrequencies" />
+                    </div>
+                    <div class="attribute" data-container="body" data-toggle="popover" data-placement="bottom" data-trigger="hover" data-content="Set the output levels">
+                        <span>Check Levels</span>
+                        <input type="checkbox" value="testTimer" ng-model="specification.calibration.checkLevels" />
+                    </div>
+                    <div class="attribute" data-container="body" data-toggle="popover" data-placement="bottom" data-trigger="hover" data-content="Check L/R configuration">
+                        <span>Check Channels</span>
+                        <input type="checkbox" value="testTimer" ng-model="specification.calibration.checkChannels" />
+                    </div>
+                </div>
+            </div>
             <div id="metricsNode" class="node">
                 <h3>Session Metrics</h3>
                 <div class="attributes">
@@ -142,6 +155,12 @@
             </div>
             <div id="globalpresurvey" class="node" ng-controller="survey" ng-init="survey = specification.preTest">
                 <h2>Pre Test Survey</h2>
+                <div class="attributes">
+                    <div class="attribute" data-container="body" data-toggle="popover" data-placement="bottom" data-trigger="hover" data-content="Allow users to go both back and forward in the test">
+                        <span>Show back button: </span>
+                        <input type="checkbox" ng-model="survey.showBackButton" />
+                    </div>
+                </div>
                 <button type="button" class="btn btn-success" ng-click="addSurveyEntry()">Add Entry</button>
                 <div class="node surveyentry" ng-repeat="opt in survey.options" ng-controller="surveyOption">
                     <h3>Survey Entry</h3>
@@ -273,6 +292,12 @@
             </div>
             <div id="globalpostsurvey" class="node" ng-controller="survey" ng-init="survey = specification.postTest">
                 <h2>Post Test Survey</h2>
+                <div class="attributes">
+                    <div class="attribute" data-container="body" data-toggle="popover" data-placement="bottom" data-trigger="hover" data-content="Allow users to go both back and forward in the test">
+                        <span>Show back button: </span>
+                        <input type="checkbox" ng-model="survey.showBackButton" />
+                    </div>
+                </div>
                 <button type="button" class="btn btn-success" ng-click="addSurveyEntry()">Add Entry</button>
                 <div class="node surveyentry" ng-repeat="opt in survey.options" ng-controller="surveyOption">
                     <h3>Survey Entry</h3>
@@ -446,6 +471,10 @@
                             <span>Show Fragment Comments: </span>
                             <input type="checkbox" ng-click="enableInterfaceOption($event)" />
                         </div>
+                        <div class="attribute" name="ticks" type="show" data-container="body" data-toggle="popover" data-placement="bottom" data-trigger="hover" data-content="Show tick marks for each scale label">
+                            <span>Show Scale Ticks: </span>
+                            <input type="checkbox" ng-click="enableInterfaceOption($event)" />
+                        </div>
                     </div>
                 </div>
             </div>
@@ -453,7 +482,7 @@
         <div style="text-align: center;">
             <button type="button" class="btn btn-success" ng-click="addPage()">Add Page</button>
         </div>
-        <div class="node pageNode" ng-controller="page" ng-repeat="page in specification.pages">
+        <div class="node pageNode" ng-controller="page" ng-repeat="page in specification.pages" dropzone>
             <h2>Page</h2>
             <button type="button" class="btn btn-danger" ng-click="removePage(page)">Remove Page</button>
             <div class="attributes">
@@ -550,6 +579,12 @@
             </div>
             <div class="node" ng-controller="survey" ng-init="survey = page.preTest">
                 <h2>Pre Page Survey</h2>
+                <div class="attributes">
+                    <div class="attribute" data-container="body" data-toggle="popover" data-placement="bottom" data-trigger="hover" data-content="Allow users to go both back and forward in the test">
+                        <span>Show back button: </span>
+                        <input type="checkbox" ng-model="survey.showBackButton" />
+                    </div>
+                </div>
                 <button type="button" class="btn btn-success" ng-click="addSurveyEntry()">Add Entry</button>
                 <div class="node surveyentry" ng-repeat="opt in survey.options" ng-controller="surveyOption">
                     <h3>Survey Entry</h3>
@@ -681,6 +716,12 @@
             </div>
             <div class="node" ng-controller="survey" ng-init="survey = page.postTest">
                 <h2>Post Page Survey</h2>
+                <div class="attributes">
+                    <div class="attribute" data-container="body" data-toggle="popover" data-placement="bottom" data-trigger="hover" data-content="Allow users to go both back and forward in the test">
+                        <span>Show back button: </span>
+                        <input type="checkbox" ng-model="survey.showBackButton" />
+                    </div>
+                </div>
                 <button type="button" class="btn btn-success" ng-click="addSurveyEntry()">Add Entry</button>
                 <div class="node surveyentry" ng-repeat="opt in survey.options" ng-controller="surveyOption">
                     <h3>Survey Entry</h3>
@@ -856,6 +897,10 @@
                             <span>Show Fragment Comments: </span>
                             <input type="checkbox" ng-click="enableInterfaceOption($event)" />
                         </div>
+                        <div class="attribute" name="ticks" type="show" data-container="body" data-toggle="popover" data-placement="bottom" data-trigger="hover" data-content="Show tick marks for each scale label">
+                            <span>Show Scale Ticks: </span>
+                            <input type="checkbox" ng-click="enableInterfaceOption($event)" />
+                        </div>
                     </div>
                 </div>
                 <div class="node">
@@ -909,6 +954,15 @@
                     <button type="button" class="btn btn-danger" ng-click="removeCommentQuestion(cq)">Remove Comment Question</button>
                     <div class="attributes">
                         <div class="attribute">
+                            <span>Type:</span>
+                            <select ng-model="cq.type">
+                                <option value="question">Question</option>
+                                <option value="checkbox">Checkbox</option>
+                                <option value="radio">Radio</option>
+                                <option value="slider">Slider</option>
+                            </select>
+                        </div>
+                        <div class="attribute">
                             <span>Unique ID:</span>
                             <input type="text" ng-model="cq.id" required/>
                         </div>
@@ -916,6 +970,10 @@
                             <span>Common Name:</span>
                             <input type="text" ng-model="cq.name" />
                         </div>
+                        <div class="attribute">
+                            <span>Mandatory:</span>
+                            <input type="checkbox" ng-model="cq.mandatory" />
+                        </div>
                         <div class="attribute" ng-show="cq.type == 'slider'">
                             <span>Minimum:</span>
                             <input type="number" ng-model="cq.min" />
@@ -1044,46 +1102,69 @@
             </div>
         </div>
     </div>
-    <div id="popupHolder" ng-show="popupVisible">
-        <div ng-controller="introduction" class="popup" ng-show="popupVisible">
-            <div class="popupTitle" ng-switch="state">
-                <span ng-switch-when="0">Test Creator <span class="label label-primary">v1.2.2</span></span>
-                <span ng-switch-when="1">Create New Test</span>
-            </div>
-            <div class="popupContent container-fluid" ng-switch="state">
-                <div ng-switch-when="0">
-                    <h3>Please wait while assets load...</h3>
+    <div class="modal fade bs-example-modal-lg" id="popupHolder" tabindex="-1" role="dialog" ng-controller="introduction">
+        <div class="modal-dialog modal-lg" role="document">
+            <div class="modal-content">
+                <div class="modal-header">
+                    <h3>Test Creator</h3>
+                    <h3 class="label label-primary">v1.2.3</h3>
                 </div>
-                <div ng-switch-when="1">
-                    <div>
-                        <span>Welcome to the WAET test creator tool. This will allow you to create a new test from scratch to suit your testing needs. If you wish to update a test file, please drag and drop the XML document into the area below for processing, otherwise press 'Next' to start a new test. This tool generates files for the WAET 1.2.2 version.</span>
+                <div class="modal-body" ng-switch="state">
+                    <div ng-switch-when="0">
+                        <div>
+                            <h3>Please wait while assets load...</h3>
+                        </div>
                     </div>
-                    <div>
-                        <input type="file" id="files" ng-model="files" onchange="handleFiles(event)" />
+                    <div ng-switch-when="1">
+                        <div>
+                            <span>Welcome to the WAET test creator tool. This will allow you to create a new test from scratch to suit your testing needs. If you wish to update a test file, please drag and drop the XML document into the area below for processing, otherwise press 'Next' to start a new test. This tool generates files for the WAET 1.2.3 version.</span>
+                        </div>
+                        <div>
+                            <input type="file" id="files" ng-model="files" onchange="handleFiles(event)" />
+                        </div>
+                    </div>
+                    <div ng-switch-when="2">
+                        <div>
+                            <span>Please select the interface you would like to use below. Selecting an interface will give a brief description of the interface type.</span>
+                        </div>
+                        <div class="row">
+                            <div class="col-md-6">
+                                <div class="new-test" ng-repeat="i in testSpecifications.interfaces" ng-mouseover="mouseover(i.name)" ng-click="select(i.name)">
+                                    <label style="cursor:pointer">
+                                        <input type="radio" name="new-test" value="{{i.name}}" id="i.name" style="cursor:pointer" /> {{i.name}}
+                                    </label>
+                                </div>
+                            </div>
+                            <div class="col-md-6">
+                                <span>{{description}}</span>
+                            </div>
+                        </div>
+                    </div>
+                    <div ng-switch-when="3" dropzone>
+                        <div>
+                            <h4>Audio Files</h4>
+                            <p>{{selected}} is a pairwise test with only two fragments per page. To make it easy to add a lot of fragments (and therefore pages) you can automatically drop your fragments onto here, set a name for each and we will populate your page elements for you!</p>
+                        </div>
+                        <table class="table table-bordered">
+                            <tr>
+                                <td>Filename</td>
+                                <td>Name</td>
+                            </tr>
+                            <tr ng-repeat="elem in audioFragments">
+                                <td>{{elem.fname}}</td>
+                                <td>
+                                    <input type="text" ng-model="elem.name" required />
+                                </td>
+                            </tr>
+                        </table>
                     </div>
                 </div>
-                <div ng-switch-when="2">
-                    <div>
-                        <span>Please select the interface you would like to use below. Selecting an interface will give a brief description of the interface type.</span>
-                    </div>
-                    <div class="row">
-                        <div class="col-md-6" style="overflow-y: scroll;height: 333px;">
-                            <div class="new-test" ng-repeat="i in testSpecifications.interfaces" ng-mouseover="mouseover(i.name)" ng-click="select(i.name)">
-                                <label style="cursor:pointer">
-                                    <input type="radio" name="new-test" value="{{i.name}}" id="i.name" style="cursor:pointer" /> {{i.name}}
-                                </label>
-                            </div>
-                        </div>
-                        <div class="col-md-6">
-                            <span>{{description}}</span>
-                        </div>
-                    </div>
+                <div class="modal-footer">
+                    <button id="popupBack" type="button" class="btn btn-default" ng-show="state>0" ng-click="back()">Back</button>
+                    <button id="popupNext" type="button" class="btn btn-warning" ng-show="state>1" ng-click="skip()">Skip</button>
+                    <button id="popupNext" type="button" class="btn btn-default" ng-click="next()">Next</button>
                 </div>
             </div>
-            <div class="popupButtons">
-                <button id="popupBack" type="button" class="btn btn-default" ng-show="state>0" ng-click="back()">Back</button>
-                <button id="popupNext" type="button" class="btn btn-default" ng-click="next()">Next</button>
-            </div>
         </div>
     </div>
     <div id="screenblank" ng-show="popupVisible"></div>
diff -r cb227441a102 -r a8455b0766cd test_create/style.css
--- a/test_create/style.css	Wed Nov 28 13:50:22 2018 +0000
+++ b/test_create/style.css	Wed Nov 28 13:51:51 2018 +0000
@@ -8,12 +8,6 @@
     background-color: rgba(0, 0, 0, 0.75);
 }
 #popupHolder {
-    text-align: center;
-    width: 100%;
-    height: 100%;
-    position: fixed;
-    top: 0px;
-    z-index: 2;
 }
 .popup {
     position: relative;
diff -r cb227441a102 -r a8455b0766cd test_create/test_core.js
--- a/test_create/test_core.js	Wed Nov 28 13:50:22 2018 +0000
+++ b/test_create/test_core.js	Wed Nov 28 13:51:51 2018 +0000
@@ -31,11 +31,48 @@
 
 var AngularInterface = angular.module("creator", []);
 
+AngularInterface.directive("dropzone", function () {
+    return {
+        restrict: "A",
+        link: function (scope, elem) {
+            elem.bind('dragover', function (evt) {
+                evt.stopPropagation();
+                evt.preventDefault();
+            });
+            elem.bind('dragend', function (evt) {
+                console.log(evt);
+                evt.stopPropagation();
+                evt.preventDefault();
+            });
+            elem.bind('drop', function (event) {
+                var evt = event.originalEvent;
+                console.log(evt);
+                evt.stopPropagation();
+                evt.preventDefault();
+
+                var files = evt.dataTransfer.files;
+                for (var i = 0, f; f = files[i]; i++) {
+                    var reader = new FileReader();
+                    reader.readAsArrayBuffer(f);
+
+                    reader.onload = (function (theFile) {
+                        return function (e) {
+                            scope.ondrop(theFile.name);
+                            scope.$apply();
+                        };
+                    })(f);
+                }
+            });
+        }
+    }
+});
+
 var specification = new Specification();
 
 window.onload = function () {
     // Get the test interface specifications
     toggleDropdowns();
+    $("#popupHolder").modal("show");
 };
 
 function toggleDropdowns() {
@@ -51,7 +88,6 @@
 }
 
 AngularInterface.controller("view", ['$scope', '$element', '$window', function ($s, $e, $w) {
-    $s.popupVisible = true;
     $s.testSpecifications = {};
 
     (function () {
@@ -75,12 +111,6 @@
         });
     })();
 
-    $s.showPopup = function () {
-        $s.popupVisible = true;
-    };
-    $s.hidePopup = function () {
-        $s.popupVisible = false;
-    };
     $s.globalSchema = undefined;
     get("xml/test-schema.xsd").then(function (text) {
         specification.processSchema(text);
@@ -178,13 +208,39 @@
 AngularInterface.controller("introduction", ['$scope', '$element', '$window', function ($s, $e, $w) {
     $s.state = 0;
     $s.selected = undefined;
+    $s.close = function () {
+        $($e[0]).modal('hide');
+    }
     $s.next = function () {
+        if (($s.state === 1 && $s.file) || $s.state === 2) {
+            $s.initialise($s.selected);
+            if ($s.selected != "AB" && $s.selected != "ABX") {
+                $s.close();
+            }
+        } else if ($s.state === 3 && $s.audioFragments.length > 0) {
+            // Populate the audio pages by creating a pairwise set of pairs
+            $s.populatePages((function (a) {
+                var b = [];
+                a.forEach(function (e1, i1, a) {
+                    a.forEach(function (e2, i2) {
+                        var entry = [e1, e2];
+                        if (i1 > i2) {
+                            b.push(entry);
+                        }
+                    });
+                });
+                return b;
+            })($s.audioFragments));
+            $s.close();
+        } else if ($s.state > 3) {
+            $s.close();
+        }
         $s.state++;
-        if ($s.state > 2 || $s.file) {
-            $s.hidePopup();
-            $s.initialise($s.selected);
-        }
+        console.log("Modal state " + $s.state);
     };
+    $s.skip = function () {
+        $s.close();
+    }
     $s.back = function () {
         $s.state--;
     };
@@ -221,9 +277,9 @@
         }
     };
     $s.select = function (name) {
-            $s.selected = name;
-        }
-        // Get the test interface specifications
+        $s.selected = name;
+    };
+    // Get the test interface specifications
     $s.file = undefined;
     $s.description = "";
 
@@ -241,6 +297,28 @@
         };
         r.readAsText($s.file);
     };
+
+    $s.audioFragments = [];
+    $s.ondrop = function (filename) {
+        $s.audioFragments.push({
+            fname: filename,
+            name: "fragment-" + String($s.audioFragments.length)
+        });
+    };
+
+    $s.populatePages = function (structures) {
+        structures.forEach(function (p, i) {
+            var page = $w.specification.createNewPage();
+            page.id = "page-" + String(i);
+            p.forEach(function (a) {
+                var fragment = page.addAudioElement();
+                fragment.name = a.name;
+                fragment.id = a.name + "-p" + String(i);
+                fragment.url = a.fname;
+            });
+            page.addInterface();
+        });
+    }
 }]);
 
 AngularInterface.controller("setup", ['$scope', '$element', '$window', function ($s, $e, $w) {
@@ -502,6 +580,10 @@
     $s.addAudioElement = function () {
         $s.page.addAudioElement();
     };
+    $s.ondrop = function (filename) {
+        var fragment = $s.page.addAudioElement();
+        fragment.url = filename;
+    };
     $s.removeAudioElement = function (element) {
         var index = $s.page.audioElements.findIndex(function (a) {
             return a == element;
diff -r cb227441a102 -r a8455b0766cd tests/examples/AB_example.xml
--- a/tests/examples/AB_example.xml	Wed Nov 28 13:50:22 2018 +0000
+++ b/tests/examples/AB_example.xml	Wed Nov 28 13:51:51 2018 +0000
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
     <waet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="test-schema.xsd">
-        <setup interface="AB" projectReturn="save.php" randomiseOrder="false" poolSize="2" loudness="-23" playOne="true">
+        <setup interface="AB" projectReturn="save.php" returnURL="http://localhost:8000/test.html?url=tests/examples/AB_example.xml" randomiseOrder="false" poolSize="2" loudness="-23" playOne="true">
             <survey location="before">
                 <surveyquestion id="sessionId" mandatory="true">
                     <statement>Please enter your name.</statement>
@@ -45,10 +45,6 @@
                 <metricenable>elementListenTracker</metricenable>
             </metric>
             <interface>
-                <interfaceoption type="check" name="fragmentMoved" />
-                <interfaceoption type="check" name="scalerange" min="25" max="75">
-                    <errormessage>Test Error Message</errormessage>
-                </interfaceoption>
                 <interfaceoption type="show" name='playhead' />
                 <interfaceoption type="show" name="page-count" />
                 <interfaceoption type="show" name='volume' />
diff -r cb227441a102 -r a8455b0766cd tests/examples/APE_example.xml
--- a/tests/examples/APE_example.xml	Wed Nov 28 13:50:22 2018 +0000
+++ b/tests/examples/APE_example.xml	Wed Nov 28 13:51:51 2018 +0000
@@ -1,145 +1,146 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
-<waet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="test-schema.xsd">
-    <setup interface="APE" projectReturn="save.php" randomiseOrder='true' poolSize="2" loudness="-23" calibration="true">
-        <survey location="before">
-            <surveyquestion id="sessionId" mandatory="true">
-                <statement>Please enter your name.</statement>
-                <conditional check="equals" value="John" jumpToOnPass="test-intro" jumpToOnFail="checkboxtest" />
-            </surveyquestion>
-            <surveycheckbox id="checkboxtest" mandatory="true" min="2" max="4" randomise="true">
-                <statement>Please select with which activities you have any experience (example checkbox question)</statement>
-                <option name="musician">Playing a musical instrument</option>
-                <option name="soundengineer">Recording or mixing audio</option>
-                <option name="developer">Developing audio software</option>
-                <option name="hwdesigner">Designing or building audio hardware</option>
-                <option name="researcher">Research in the field of audio</option>
-            </surveycheckbox>
-            <surveyquestion id="instrument" mandatory="false">
-                <statement>What instrument did you play?</statement>
-            </surveyquestion>
-            <surveystatement id="test-intro">
-                <statement>This is an example of an 'APE'-style test, with two pages, using the test stimuli in 'example_eval/'.</statement>
-            </surveystatement>
-        </survey>
-        <survey location="after">
-            <surveyquestion id="location" mandatory="true" boxsize="large">
-                <statement>Please enter your location. (example mandatory text question)</statement>
-            </surveyquestion>
-            <surveynumber id="age" min="0">
-                <statement>Please enter your age (example non-mandatory number question)</statement>
-            </surveynumber>
-            <surveyradio id="rating">
-                <statement>Please rate this interface (example radio button question)</statement>
-                <option name="bad">Bad</option>
-                <option name="poor">Poor</option>
-                <option name="good">Good</option>
-                <option name="great">Great</option>
-            </surveyradio>
-            <surveystatement id="thankyou">
-                <statement>Thank you for taking this listening test. Please click 'Submit' and your results will appear in the 'saves/' folder.</statement>
-            </surveystatement>
-        </survey>
-        <metric>
-            <metricenable>testTimer</metricenable>
-            <metricenable>elementTimer</metricenable>
-            <metricenable>elementInitialPosition</metricenable>
-            <metricenable>elementTracker</metricenable>
-            <metricenable>elementFlagListenedTo</metricenable>
-            <metricenable>elementFlagMoved</metricenable>
-            <metricenable>elementListenTracker</metricenable>
-        </metric>
-        <interface>
-            <interfaceoption type="check" name="fragmentMoved" />
-            <interfaceoption type="check" name="fragmentPlayed" />
-            <interfaceoption type="check" name="scalerange" min="25" max="75" />
-            <interfaceoption type="show" name='playhead' />
-            <interfaceoption type="show" name="page-count" />
-            <interfaceoption type="show" name="comments" />
-        </interface>
-    </setup>
-    <page id='test-0' hostURL="media/example/" randomiseOrder='true' repeatCount='0' loop='true' synchronous="true" loudness="-12">
-        <commentboxprefix>Comment on fragment</commentboxprefix>
-        <interface name="preference">
-            <title>Preference</title>
-            <scales>
-                <scalelabel position="0">Min</scalelabel>
-                <scalelabel position="100">Max</scalelabel>
-                <scalelabel position="50">Middle</scalelabel>
-                <scalelabel position="20">20</scalelabel>
-            </scales>
-        </interface>
-        <interface name="depth">
-            <title>Depth</title>
-            <scales>
-                <scalelabel position="0">Low</scalelabel>
-                <scalelabel position="100">High</scalelabel>
-                <scalelabel position="50">Middle</scalelabel>
-                <scalelabel position="50">Middle</scalelabel>
-            </scales>
-        </interface>
-        <audioelement url="0.wav" id="track-0" type="anchor" />
-        <audioelement url="1.wav" id="track-1" />
-        <audioelement url="2.wav" id="track-2" />
-        <audioelement url="3.wav" id="track-3" />
-        <audioelement url="4.wav" id="track-4" />
-        <survey location="before">
-            <surveyentry type="statement" id="test-0-intro">
-                <statement>Example of an 'APE' style interface with hidden anchor 'zero' (which needs to be below 20%), looping of the samples, randomisation of marker labels, mandatory moving of every sample, and a forced scale usage of at least 25%-75%.</statement>
-            </surveyentry>
-        </survey>
-        <survey location="after">
-            <surveyentry type="question" id="genre-0" mandatory="true">
-                <statement>Please enter the genre.</statement>
-            </surveyentry>
-        </survey>
-    </page>
-    <page id='test-1' hostURL="media/example/" randomiseOrder='true' repeatCount='0' loop='false' synchronous="true" label="letter">
-        <commentboxprefix>Comment on fragment</commentboxprefix>
-        <interface name="preference">
-            <title>Example Test Question</title>
-            <scales>
-                <scalelabel position="0">Min</scalelabel>
-                <scalelabel position="100">Max</scalelabel>
-                <scalelabel position="50">Middle</scalelabel>
-                <scalelabel position="20">20</scalelabel>
-            </scales>
-        </interface>
-        <audioelement url="0.wav" gain="-6" id="track-5" type="anchor" marker="20" />
-        <audioelement url="1.wav" gain="0.0" id="track-6" type="reference" marker="80" />
-        <audioelement url="2.wav" gain="0.0" id="track-7" />
-        <audioelement url="3.wav" gain="0.0" id="track-8" />
-        <audioelement url="4.wav" gain="0.0" id="track-9" />
-        <audioelement url="5.wav" gain="0.0" id="track-10" />
-        <audioelement url="6.wav" gain="0.0" id="track-11" type="outside-reference" />
-        <commentquestions>
-            <commentquestion id='mixingExperience'>
-                <statement>What is your general experience with numbers?</statement>
-            </commentquestion>
-            <commentradio id="preference">
-                <statement>Please enter your overall preference</statement>
-                <option name="worst">Very Bad</option>
-                <option name="bad"></option>
-                <option name="OK">OK</option>
-                <option name="Good"></option>
-                <option name="Great">Great</option>
-            </commentradio>
-            <commentcheckbox id="character" type="checkbox">
-                <statement>Please describe the overall character</statement>
-                <option name="funky">Funky</option>
-                <option name="mellow">Mellow</option>
-                <option name="laidback">Laid back</option>
-                <option name="heavy">Heavy</option>
-            </commentcheckbox>
-        </commentquestions>
-        <survey location="before">
-            <surveyentry type="statement" id="test-1-intro">
-                <statement>Example of an 'APE' style interface with hidden anchor 'zero' (which needs to be below 20%), looping of the samples, randomisation of marker labels, mandatory moving of every sample, and a forced scale usage of at least 25%-75%.</statement>
-            </surveyentry>
-        </survey>
-        <survey location="after">
-            <surveyentry type="question" id="genre-1" mandatory="true">
-                <statement>Please enter the genre.</statement>
-            </surveyentry>
-        </survey>
-    </page>
-</waet>
+    <waet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="test-schema.xsd">
+        <setup interface="APE" projectReturn="save.php" randomiseOrder='true' poolSize="2" loudness="-23">
+            <calibration checkFrequencies="true" checkLevels="true" checkChannels="true" />
+            <survey location="before">
+                <surveyquestion id="sessionId" mandatory="true">
+                    <statement>Please enter your name.</statement>
+                    <conditional check="equals" value="John" jumpToOnPass="test-intro" jumpToOnFail="checkboxtest" />
+                </surveyquestion>
+                <surveycheckbox id="checkboxtest" mandatory="true" min="2" max="4" randomise="true">
+                    <statement>Please select with which activities you have any experience (example checkbox question)</statement>
+                    <option name="musician">Playing a musical instrument</option>
+                    <option name="soundengineer">Recording or mixing audio</option>
+                    <option name="developer">Developing audio software</option>
+                    <option name="hwdesigner">Designing or building audio hardware</option>
+                    <option name="researcher">Research in the field of audio</option>
+                </surveycheckbox>
+                <surveyquestion id="instrument" mandatory="false">
+                    <statement>What instrument did you play?</statement>
+                </surveyquestion>
+                <surveystatement id="test-intro">
+                    <statement>This is an example of an 'APE'-style test, with two pages, using the test stimuli in 'example_eval/'.</statement>
+                </surveystatement>
+            </survey>
+            <survey location="after">
+                <surveyquestion id="location" mandatory="true" boxsize="large">
+                    <statement>Please enter your location. (example mandatory text question)</statement>
+                </surveyquestion>
+                <surveynumber id="age" min="0">
+                    <statement>Please enter your age (example non-mandatory number question)</statement>
+                </surveynumber>
+                <surveyradio id="rating">
+                    <statement>Please rate this interface (example radio button question)</statement>
+                    <option name="bad">Bad</option>
+                    <option name="poor">Poor</option>
+                    <option name="good">Good</option>
+                    <option name="great">Great</option>
+                </surveyradio>
+                <surveystatement id="thankyou">
+                    <statement>Thank you for taking this listening test. Please click 'submit' and your results will appear in the 'saves/' folder.</statement>
+                </surveystatement>
+            </survey>
+            <metric>
+                <metricenable>testTimer</metricenable>
+                <metricenable>elementTimer</metricenable>
+                <metricenable>elementInitialPosition</metricenable>
+                <metricenable>elementTracker</metricenable>
+                <metricenable>elementFlagListenedTo</metricenable>
+                <metricenable>elementFlagMoved</metricenable>
+                <metricenable>elementListenTracker</metricenable>
+            </metric>
+            <interface>
+                <interfaceoption type="check" name="fragmentMoved" />
+                <interfaceoption type="check" name="fragmentPlayed" />
+                <interfaceoption type="check" name="scalerange" min="25" max="75" />
+                <interfaceoption type="show" name='playhead' />
+                <interfaceoption type="show" name="page-count" />
+                <interfaceoption type="show" name="comments" />
+            </interface>
+        </setup>
+        <page id='test-0' hostURL="media/example/" randomiseOrder='true' repeatCount='0' loop='true' synchronous="true" loudness="-12">
+            <commentboxprefix>Comment on fragment</commentboxprefix>
+            <interface name="preference">
+                <title>Preference</title>
+                <scales>
+                    <scalelabel position="0">Min</scalelabel>
+                    <scalelabel position="100">Max</scalelabel>
+                    <scalelabel position="50">Middle</scalelabel>
+                    <scalelabel position="20">20</scalelabel>
+                </scales>
+            </interface>
+            <interface name="depth">
+                <title>Depth</title>
+                <scales>
+                    <scalelabel position="0">Low</scalelabel>
+                    <scalelabel position="100">High</scalelabel>
+                    <scalelabel position="50">Middle</scalelabel>
+                    <scalelabel position="50">Middle</scalelabel>
+                </scales>
+            </interface>
+            <audioelement url="0.wav" id="track-0" type="anchor" />
+            <audioelement url="1.wav" id="track-1" />
+            <audioelement url="2.wav" id="track-2" />
+            <audioelement url="3.wav" id="track-3" />
+            <audioelement url="4.wav" id="track-4" />
+            <survey location="before">
+                <surveyentry type="statement" id="test-0-intro">
+                    <statement>Example of an 'APE' style interface with hidden anchor 'zero' (which needs to be below 20%), looping of the samples, randomisation of marker labels, mandatory moving of every sample, and a forced scale usage of at least 25%-75%.</statement>
+                </surveyentry>
+            </survey>
+            <survey location="after">
+                <surveyentry type="question" id="genre-0" mandatory="true">
+                    <statement>Please enter the genre.</statement>
+                </surveyentry>
+            </survey>
+        </page>
+        <page id='test-1' hostURL="media/example/" randomiseOrder='true' repeatCount='0' loop='false' synchronous="true" label="letter">
+            <commentboxprefix>Comment on fragment</commentboxprefix>
+            <interface name="preference">
+                <title>Example Test Question</title>
+                <scales>
+                    <scalelabel position="0">Min</scalelabel>
+                    <scalelabel position="100">Max</scalelabel>
+                    <scalelabel position="50">Middle</scalelabel>
+                    <scalelabel position="20">20</scalelabel>
+                </scales>
+            </interface>
+            <audioelement url="0.wav" gain="-6" id="track-5" type="anchor" marker="20" />
+            <audioelement url="1.wav" gain="0.0" id="track-6" type="reference" marker="80" />
+            <audioelement url="2.wav" gain="0.0" id="track-7" />
+            <audioelement url="3.wav" gain="0.0" id="track-8" />
+            <audioelement url="4.wav" gain="0.0" id="track-9" />
+            <audioelement url="5.wav" gain="0.0" id="track-10" />
+            <audioelement url="6.wav" gain="0.0" id="track-11" type="outside-reference" />
+            <commentquestions>
+                <commentquestion id='mixingExperience'>
+                    <statement>What is your general experience with numbers?</statement>
+                </commentquestion>
+                <commentradio id="preference">
+                    <statement>Please enter your overall preference</statement>
+                    <option name="worst">Very Bad</option>
+                    <option name="bad"></option>
+                    <option name="OK">OK</option>
+                    <option name="Good"></option>
+                    <option name="Great">Great</option>
+                </commentradio>
+                <commentcheckbox id="character">
+                    <statement>Please describe the overall character</statement>
+                    <option name="funky">Funky</option>
+                    <option name="mellow">Mellow</option>
+                    <option name="laidback">Laid back</option>
+                    <option name="heavy">Heavy</option>
+                </commentcheckbox>
+            </commentquestions>
+            <survey location="before">
+                <surveyentry type="statement" id="test-1-intro">
+                    <statement>Example of an 'APE' style interface with hidden anchor 'zero' (which needs to be below 20%), looping of the samples, randomisation of marker labels, mandatory moving of every sample, and a forced scale usage of at least 25%-75%.</statement>
+                </surveyentry>
+            </survey>
+            <survey location="after">
+                <surveyentry type="question" id="genre-1" mandatory="true">
+                    <statement>Please enter the genre.</statement>
+                </surveyentry>
+            </survey>
+        </page>
+    </waet>
diff -r cb227441a102 -r a8455b0766cd tests/examples/horizontal_example.xml
--- a/tests/examples/horizontal_example.xml	Wed Nov 28 13:50:22 2018 +0000
+++ b/tests/examples/horizontal_example.xml	Wed Nov 28 13:51:51 2018 +0000
@@ -17,6 +17,7 @@
             <interfaceoption type="show" name="page-count" />
             <interfaceoption type="show" name="volume" />
             <interfaceoption type="show" name="comments" />
+            <interfaceoption type="show" name="ticks" />
         </interface>
     </setup>
     <page id='test-0' hostURL="media/example/" randomiseOrder='true' repeatCount='0' loop='true' loudness="-12">
diff -r cb227441a102 -r a8455b0766cd tests/examples/mushra_example.xml
--- a/tests/examples/mushra_example.xml	Wed Nov 28 13:50:22 2018 +0000
+++ b/tests/examples/mushra_example.xml	Wed Nov 28 13:51:51 2018 +0000
@@ -112,24 +112,24 @@
         <audioelement url="5.wav" gain="0.0" id="track-10" />
         <audioelement url="1.wav" gain="0.0" id="track-11" type="outside-reference" />
         <commentquestions>
-            <commentquestion id='mixingExperience' type="question">
+            <commentquestion id='mixingExperience'>
                 <statement>What is your general experience with numbers?</statement>
             </commentquestion>
-            <commentquestion id="preference" type="radio">
+            <commentradio id="preference">
                 <statement>Please enter your overall preference</statement>
                 <option name="worst">Very Bad</option>
                 <option name="bad"></option>
                 <option name="OK">OK</option>
                 <option name="Good"></option>
                 <option name="Great">Great</option>
-            </commentquestion>
-            <commentquestion id="character" type="checkbox">
+            </commentradio>
+            <commentcheckbox id="character">
                 <statement>Please describe the overall character</statement>
                 <option name="funky">Funky</option>
                 <option name="mellow">Mellow</option>
                 <option name="laidback">Laid back</option>
                 <option name="heavy">Heavy</option>
-            </commentquestion>
+            </commentcheckbox>
         </commentquestions>
         <survey location="before">
             <surveyentry type="statement" id="test-1-intro">
diff -r cb227441a102 -r a8455b0766cd tests/examples/radio_example.xml
--- a/tests/examples/radio_example.xml	Wed Nov 28 13:50:22 2018 +0000
+++ b/tests/examples/radio_example.xml	Wed Nov 28 13:51:51 2018 +0000
@@ -29,9 +29,9 @@
                 <scalelabel position="100">(5) Inaudible</scalelabel>
             </scales>
         </interface>
-        <audioelement url="0.wav" id="track-1" alwaysInclude="true" />
-        <audioelement url="1.wav" id="track-2" />
-        <audioelement url="3.wav" id="track-4" />
-        <audioelement url="3.wav" id="track-5" />
+        <audioelement url="0.wav" id="track-0" alwaysInclude="true" />
+        <audioelement url="1.wav" id="track-1" />
+        <audioelement url="2.wav" id="track-2" />
+        <audioelement url="3.wav" id="track-3" />
     </page>
 </waet>
diff -r cb227441a102 -r a8455b0766cd xml/test-schema.xsd
--- a/xml/test-schema.xsd	Wed Nov 28 13:50:22 2018 +0000
+++ b/xml/test-schema.xsd	Wed Nov 28 13:51:51 2018 +0000
@@ -48,6 +48,7 @@
             <xs:complexType>
                 <xs:sequence>
                     <xs:element name="exitText" type="xs:string" minOccurs="0" maxOccurs="1" />
+                    <xs:element ref="calibration" minOccurs="0" maxOccurs="1" />
                     <xs:element ref="survey" minOccurs="0" maxOccurs="2" />
                     <xs:element ref="metric" maxOccurs="1" />
                     <xs:element ref="interface" maxOccurs="1" />
@@ -59,7 +60,6 @@
                 <xs:attribute ref="poolSize" />
                 <xs:attribute name="loudness" type="xs:nonPositiveInteger" use="optional" />
                 <xs:attribute name="sampleRate" type="xs:positiveInteger" use="optional" />
-                <xs:attribute name="calibration" type="xs:boolean" default="false" />
                 <xs:attribute name="crossFade" default="0.0">
                     <xs:simpleType>
                         <xs:restriction base="xs:decimal">
@@ -67,6 +67,7 @@
                         </xs:restriction>
                     </xs:simpleType>
                 </xs:attribute>
+                <xs:attribute name="randomiseAxisOrder" type="xs:boolean" default="false" />
                 <xs:attribute ref="preSilence" />
                 <xs:attribute ref="postSilence" />
                 <xs:attribute ref="playOne" />
@@ -75,6 +76,14 @@
             </xs:complexType>
         </xs:element>
 
+        <xs:element name="calibration">
+            <xs:complexType>
+                <xs:attribute name="checkFrequencies" type="xs:boolean" default="false" />
+                <xs:attribute name="checkLevels" type="xs:boolean" default="false" />
+                <xs:attribute name="checkChannels" type="xs:boolean" default="false" />
+            </xs:complexType>
+        </xs:element>
+
         <xs:element name="page">
             <xs:complexType>
                 <xs:sequence>
@@ -105,6 +114,7 @@
                     </xs:simpleType>
                 </xs:attribute>
                 <xs:attribute name="labelStart" type="xs:string" use="optional" default="" />
+                <xs:attribute name="randomiseAxisOrder" type="xs:boolean" use="optional" />
                 <xs:attribute ref="poolSize" />
                 <xs:attribute ref="alwaysInclude" />
                 <xs:attribute name="position" use="optional" type="xs:nonNegativeInteger" />
@@ -277,6 +287,7 @@
                 </xs:sequence>
                 <xs:attribute ref="id" use="optional" />
                 <xs:attribute ref="name" use="optional" />
+                <xs:attribute ref="mandatory" use="optional" />
             </xs:complexType>
         </xs:element>
 
@@ -296,6 +307,7 @@
                 </xs:sequence>
                 <xs:attribute ref="id" use="optional" />
                 <xs:attribute ref="name" use="optional" />
+                <xs:attribute ref="mandatory" use="optional" />
             </xs:complexType>
         </xs:element>
 
@@ -306,6 +318,7 @@
                 </xs:sequence>
                 <xs:attribute ref="id" use="optional" />
                 <xs:attribute ref="name" use="optional" />
+                <xs:attribute ref="mandatory" use="optional" />
             </xs:complexType>
         </xs:element>
 
@@ -322,6 +335,7 @@
                 <xs:attribute name="max" type="xs:decimal" use="required" />
                 <xs:attribute name="step" type="xs:decimal" use="optional" default="1" />
                 <xs:attribute name="value" type="xs:decimal" use="optional" />
+                <xs:attribute ref="mandatory" use="optional" />
             </xs:complexType>
         </xs:element>
 
@@ -547,6 +561,7 @@
                         </xs:restriction>
                     </xs:simpleType>
                 </xs:attribute>
+                <xs:attribute name="showBackButton" type="xs:boolean" default="true" />
             </xs:complexType>
         </xs:element>