Stop a Z and I Emulator for Windows Session

The command PCOMSTOP has the following parameters:

/s
Session letter of session to stop. The syntax is /s=session-letter. This is optional. If omitted, the first available session letter is used.
/all
Stops all sessions
/NCE
Stops all or specific session without confirmation, even if the confirmation on exit or exit all option are set.
/q
Quiet mode. In quiet mode, PCOMSTOP does not write any messages to stdout.
/?
Displays help information.