To stop McIDAS commands, enter a slash followed by the Process IDentification (PID) numbers. If you don't know the PID numbers, use the ? (Question Mark) command to list them.
/ 374
This entry terminates the McIDAS command running under PID number 374.
/ 27347 27348 34272
This entry terminates McIDAS commands running under PID numbers 27347, 27348, and 34272.