256 revert [names ...]::

   257     Revert any uncommitted modifications made to the named files or

   258     directories.  This restores the contents of the affected files to

   259     an unmodified state.

   260 

   261     If a file has been deleted, it is recreated.  If the executable

   262     mode of a file was changed, it is reset.

   263 

   264     If a directory is given, all files in that directory and its

   265     subdirectories are reverted.

   266 

   267     If no arguments are given, all files in the current directory and

   268     its subdirectories are reverted.

   269 

   270     options:

   271     -r, --rev <rev>       revision to revert to

   272     -n, --nonrecursive    do not recurse into subdirectories

   273