The command has one optional parameter.

 process-name

 	Specifies the name of a parent process or spawned sub-process
 	to which control passes. The process must already exist, must
 	be part of your current job, and must share the same input
 	stream as your current process. However, the process cannot be
 	your current process or a sub-process created with the SPAWN
 	command using the /NOWAIT qualifier.

 	Process names can contain from 1 to 15 alphanumeric
 	characters. If a connection to the specified process cannot be
 	made, an error message is displayed.

 	You may not specify a process name if you specify either the
 	/IDENTIFICATION	or /PARENT qualifier.