Refer to group elements by letters instead of numbers, in keeping
authorsimon <simon@cda61777-01e9-0310-a592-d414129be87e>
Tue, 5 Jan 2010 23:40:41 +0000 (23:40 +0000)
committersimon <simon@cda61777-01e9-0310-a592-d414129be87e>
Tue, 5 Jan 2010 23:40:41 +0000 (23:40 +0000)
with usual abstract group notation. In puzzles with a clear
identity, it's called e.

git-svn-id: svn://svn.tartarus.org/sgt/puzzles@8812 cda61777-01e9-0310-a592-d414129be87e


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