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+.TH UNFLATTEN 1 "21 January 2001"
+.SH NAME
+unflatten \- adjust directed graphs to improve layout aspect ratio
+.SH SYNOPSIS
+.B unflatten
+[\fB\-f\fR]
+[\fB\-l\fIlen\fR]
+[\fB\-c\fIlen\fR
+] [
+.B \-o
+.I outfile
+]
+[ files ]
+.SH DESCRIPTION
+.B unflatten
+is a preprocessor to 
+.B dot
+that is
+used to improve the aspect ratio of graphs having many leaves 
+or disconnected nodes.
+The usual layout for such a graph is generally very wide or tall.  
+.B unflatten
+inserts invisible edges or adjusts the \fBminlen\fP on edges
+to improve layout compaction.
+.SH OPTIONS
+The following options are supported:
+.TP
+.BI \-l " len"
+The minimum length of leaf edges is staggered
+between 1 and \fIlen\fP (a small integer).  
+.TP
+.B \-f
+Enables the staggering of the \fB-l\fP option to fanout nodes whose
+indegree and outdegree are both 1. This helps with structures such
+as \fIa -> {w x y z} -> b\fP.
+This option only works if the \fB-l\fP flag is set. 
+.TP
+.BI \-c " len"
+Form disconnected nodes into chains of up to \fIlen\fP nodes.
+.TP
+.BI \-o " outfile"
+causes the output to be written to the specified file; by default,
+output is written to \fBstdout\fP.
+.SH OPERANDS
+The following operand is supported:
+.TP 8
+.I files
+Names of files containing 1 or more graphs in dot format.
+If no
+.I files
+operand is specified,
+the standard input will be used.
+.SH AUTHORS
+Stephen C. North <[e-mail]>
+.br
+Emden R. Gansner <[e-mail]>
+.SH "SEE ALSO"
+gc(1), dot(1), acyclic(1), gvpr(1), gvcolor(1), ccomps(1), tred(1), libgraph(3)