Command routine

 0
Normal completion.
 4
ISPF should process the requested function.
12
Command deferred; retain the command on the Command line. Browse data is redisplayed.
20
Severe error. (The BRIF service terminates immediately with a return code of 20.)

Errors that the BRIF service cannot handle must be handled by the dialog; for example, environment-dependent errors would be processed by the dialog.