$ svn help co
checkout (co): Check out a working directory from a repository.
usage: checkout REPOSPATH1 [REPOSPATH2 REPOSPATH3...]
Notice that there's no mention of the fact that it accepts
the {-r, -d, -D} flags. We can either just throw that information
into the usage command, or perhaps somebody can add an organized
system for specifying exactly which args a subcommand can accept.
This system would also be able to *report* which args a subcommand
can accept -- and thus be used in the usage messages.
This is a "bite sized task" for a volunteer.
Minor SVN-605 column headings for "svn status" output
