
{
{     Common deck iodtrt
{

  TYPE
    iot$tape_request_types = 1..20;

  CONST
    ioc$tape_clear = 1,
    ioc$tape_rewind = 2,
    ioc$tape_unload = 3,
    ioc$tape_forspace = 4,
    ioc$tape_backspace = 5,
    ioc$tape_cont_backspace = 6,
    ioc$tape_read = 7,
    ioc$tape_read_backwards = 8,
    ioc$tape_write = 9,
    ioc$tape_loop1 = 10,
    ioc$tape_loop2 = 11,
    ioc$tape_loop3 = 12,
    ioc$tape_write_tapemark = 13,
    ioc$tape_erase = 14,
    ioc$tape_data_security_erase = 15,
    ioc$tape_master_clear = 16,
    ioc$tape_get_status = 17,
    ioc$skip_tapemark_forward = 18,
    ioc$skip_tapemark_backward = 19,
    ioc$locate_block = 20;
