Locked Functions & Operators
A defined operation may be locked by the system function ⎕LOCK.
Once locked, and operation may not be displayed or edited and the system functions ⎕CR, ⎕NR and ⎕VR return empty results.
Stop, trace and monitor settings are cancelled when an operation is locked.
A locked operation may not be suspended, nor may a locked operation remain pendent when execution is suspended. Instead, the state indicator is cut back to the point where the locked operation was invoked.