MAG_REW - Rewind tape

Description:

The tape is rewound to its load point.

Invocation:

CALL MAG_REW(TD, STATUS)

Arguments:

TD=INTEGER (Given)

A variable containing the tape descriptor.

STATUS=INTEGER (given and Returned)

Variable holding the status value. If this variable is not SAI__OK on input, then the routine will return without action. If the routine fails to complete, this variable will be set to an appropriate error number.