docs: def do_propdel(self, subcmd, opts, *args):
          """Remove PROPNAME from files, dirs, or revisions.
  
          usage:
              1. propdel PROPNAME [PATH...]
              2. propdel PROPNAME --revprop -r REV [URL]
          
          1. Removes versioned props in working copy.
          2. Removes unversioned remote prop on repos revision.
  
          ${cmd_option_list}
          """
          print "'svn %s' opts: %s" % (subcmd, opts)
          print "'svn %s' args: %s" % (subcmd, args)