docs/user-guide.rst
2017-08-30 Ryan McElroy user-guide: edit pass
2015-04-14 Greg Ward docs: cover 'touch' command stable
2015-04-13 Greg Ward docs: explain that obsolete is not hidden stable
2015-04-13 Greg Ward docs: explain --hidden option stable
2015-04-13 Greg Ward docs: tweak wording, punctuation for better readability stable
2014-06-06 Greg Ward docs: add new user guide
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