O -> Option Table 1.1
    R) Rewind Tape
    W) Write File Mark
    N) Skip Forward One Record
    M) Skip Reverse One Record
    P) Skip Forward to File Mark
    Q) Skip Reverse to File Mark
    O) Put Unit On-Line
    U) Take Unit Off-Line
R -> Read Test 1.0
T -> TOS
    L -> Returns to Loader
V -> Verify
W -> Write Test 1.0
    Automatically calls Read Test after