Added docstrings.

Author Pascal J. Bourguignon <pjb@informatimago.com>
Author date 2013-05-12 03:44:28
Author local date 2013-05-12 05:44:28 +0200
Committer Pascal J. Bourguignon <pjb@informatimago.com>
Committer date 2013-05-12 03:44:28
Committer local date 2013-05-12 05:44:28 +0200
Commit 16ad331290ff9434ffb42b80a64db7d4180a161a
Tree f7f2c1e42d93b7fa76f11dda63b446b23981c195
Parent 0aa94d5cc795c206129ce8d3ebd4e980142f4623
Added docstrings.
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