{ ADD DIRECTORY 'filename' [, 'filename' ]...
| DROP DIRECTORY
    'filename' [ FORCE | NOFORCE ]
    [, 'filename' [ FORCE | NOFORCE ] ]...
| RENAME DIRECTORY
    'old_dir_name' TO 'new_dir_name'
    [, 'old_dir_name' TO 'new_dir_name' ]...
}