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+.de URL
+\\$2 \(laURL: \\$1 \(ra\\$3
+..
+.if \n[.g] .mso www.tmac
+.TH REDO-DOT 1
+.SH NAME
+redo-dot \- print
+.I redo
+dependency graph for the current directory
+.SH SYNOPSIS
+.B redo-dot
+.RI [pattern]
+.SH DESCRIPTION
+.IR redo(1)
+is a tool for building files and for rebuilding them if any of their dependencies have changed.
+.I redo-dot
+prints the dependency graph for the current directory in the file format consumed by
+.IR dot(1)
+from the Graphviz layout programs. If the current working directory is not a
+.IR redo(1)
+build directory,
+.I redo-dot
+exits with a status code indicating failure.
+.PP
+In the dependency graph, targets and sources are represented by nodes, dependencies are represented by solid edges, and non-existence dependencies are represented by dotted edges. Targets that have impossible to satisfy dependencies have a bold outline. Targets that are rebuilt depending on input to
+.IR redo-stamp(1)
+have a dashed outline.
+.PP
+A pattern contains characters that match themselves and the meta-characters “!”, “*”, “?”, and “[”, which lose their special meanings if they are quoted. Asterisks (“*”) match any string of characters. Question marks (“?”) match any single character. Left brackets (“[”) and right brackets (“]”) indicate start and end of a character class. Character classes match any characters between brackets or a range of characters specified using a minus (“-”); to include literal minus, make it the first or last character. Exclamation marks (“!”) as the first character of any character class negates it.
+.SH EXAMPLES
+.TP
+.B redo-dot |dot -Tx11
+shows the full dependency graph in an X11 window using
+.IR dot(1).
+.TP
+.B redo-dot '*/stdio.h'
+outputs a dependency graph with only nodes that match the pattern
+.IR */stdio.h ,
+dependencies of nodes that match the pattern, and nodes that depend on nodes that match the pattern.
+.TP
+.B redo-dot |sed s%"$(pwd)"/%%g >deps.dot; dot deps.dot -Tpng >deps.png
+outputs the full dependency graph into a file named
+.IR deps.dot ,
+then generates a PNG (Portable Network Graphics) file named
+.IR deps.png
+from it using
+.IR dot(1) .
+The
+.IR sed(1)
+invocation removes the current working directory from the node names.
+.SH HISTORY
+.I redo-dot
+was designed and implemented by Nils Dagsson Moskopp.
+.SH AUTHOR
+.I redo-dot
+and this man page were written by Nils Dagsson Moskopp.
+.SH COPYRIGHT
+Copyright © 2015-2016 Nils Dagsson Moskopp.
+License AGPLv3+: GNU Affero GPL version 3 or later <http://www.gnu.org/licenses/agpl-3.0.html>.
+This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
+.SH SEE ALSO
+.IR sh(1) ,
+.IR redo(1) ,
+.IR redo-always(1) ,
+.IR redo-ifchange(1) ,
+.IR redo-ifcreate(1) ,
+.IR redo-ood(1) ,
+.IR redo-sources(1) ,
+.IR redo-stamp(1) ,
+.IR redo-targets(1)
+.SH BUGS
+.I redo-dot
+may break if the target filename contains a tab or newline character.