+===========================+==============================================+
| :const:`READONLY` | Never writable. |
+---------------------------+----------------------------------------------+
-| :const:`RO` | Shorthand for :const:`READONLY`. |
-+---------------------------+----------------------------------------------+
| :const:`READ_RESTRICTED` | Not readable in restricted mode. |
+---------------------------+----------------------------------------------+
| :const:`WRITE_RESTRICTED` | Not writable in restricted mode. |
.. index::
single: READONLY
- single: RO
single: READ_RESTRICTED
single: WRITE_RESTRICTED
single: RESTRICTED