diff -r 4ad6499d7998 -r a0f6e994657f extra/soundsoftware/matlab-docs.conf
--- a/extra/soundsoftware/matlab-docs.conf
+++ b/extra/soundsoftware/matlab-docs.conf
@@ -135,7 +135,7 @@
 #               if no, all files are saved in the same directory, often 
 #               easier for outside linking to files
 #------------------------------------------------------------------------
-set producetree = no
+set producetree = yes
 
 #------------------------------------------------------------------------
 # codebodyindex/files: HTML-code for adding to BODY tag