define verb TBO image mgr_tools:TBO noparameters qualifier RESET nonnegatable qualifier INFO nonnegatable qualifier DIRECTION nonnegatable, value(required, type=DIR_TYPE) qualifier DELTA nonnegatable, value(required, type=$NUMBER) qualifier RANGE nonnegatable, value(required, type=$NUMBER) disallow RESET and (DELTA or RANGE or DIRECTION) disallow DELTA and not (RANGE and DIRECTION) disallow RANGE and not (DELTA and DIRECTION) disallow DIRECTION and not (DELTA and RANGE) define type DIR_TYPE keyword BACKWARD keyword FORWARD