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UNFLATTEN(1)									     UNFLATTEN(1)

NAME
       unflatten - adjust directed graphs to improve layout aspect ratio

SYNOPSIS
       unflatten [-f] [-llen] [-clen ] [ -o outfile ] [ files ]

DESCRIPTION
       unflatten is a preprocessor to dot that is used to improve the aspect ratio of graphs hav-
       ing many leaves or disconnected nodes.  The usual layout for such  a  graph  is	generally
       very  wide  or  tall.  unflatten inserts invisible edges or adjusts the minlen on edges to
       improve layout compaction.

OPTIONS
       The following options are supported:

       -l len The minimum length of leaf edges is staggered between 1 and len (a small integer).

       -f     Enables the staggering of the -l option to fanout nodes whose indegree  and  outde-
	      gree  are  both  1.  This  helps with structures such as a -> {w x y z} -> b.  This
	      option only works if the -l flag is set.

       -c len Form disconnected nodes into chains of up to len nodes.

       -o outfile
	      causes the output to be written to the specified file; by default, output is  writ-
	      ten to stdout.

OPERANDS
       The following operand is supported:

       files   Names  of files containing 1 or more graphs in dot format.  If no files operand is
	       specified, the standard input will be used.

AUTHORS
       Stephen C. North <north@research.att.com>
       Emden R. Gansner <erg@research.att.com>

SEE ALSO
       gc(1), dot(1), acyclic(1), gvpr(1), gvcolor(1), ccomps(1), tred(1), libgraph(3)

					 21 January 2001			     UNFLATTEN(1)
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