 5:23 *        'no prt-scr after 5:23 AM
10:23 * key disk video com print   'nothing works after 10:23 AM
11:23 *        'after 11:23 AM, only prt-scr does not work
23:24 disk     'after 23:23 i.e. 11:24 PM, disk access is turned off
23:58          'after 23:58 i.e. 11:58 PM, everything works to allow


