Graph

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Merge.
Sat, 31 Dec 2011 13:26:29 -0500, by Steve Losh
Typos and outline.
Sat, 31 Dec 2011 13:26:22 -0500, by Steve Losh
Replaced
Wed, 23 Nov 2011 23:48:39 -0400, by sherrillmix

less more | at revision 67: (0) -30 -10 -3 +3 +10 +30 +100 tip