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view ja/undo-simple.dot @ 1112:7764de86d22f

refined chap 2
author Zhaoping Sun <zhaopingsun@gmail.com>
date Mon Dec 28 22:58:53 2009 -0500 (2009-12-28)
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1 digraph undo_simple {
2 "first change" -> "second change";
3 "second change" -> "back out\nsecond change";
4 }