HP UX 11i v1 I/O Cards manual Application number of terminal group, Appln

		ZCOM C I/F Library Routines
		ZLTQUEUE (3X)
Threads	This routine may be called from a multi-threaded application using the
Considerations	POSIX (1003.1c) kernel threads API package. This routine has the
	following characteristics when called by a multi-threaded application:
	cancellation point	Thread cancellation can occur when a thread calls this
		routine.
	async-cancel unsafe	The calling thread’s cancelability type must be
		PTHREAD_CANCEL_DEFERRED if cancellation is
		enabled.
	async-signal unsafe	It cannot be called from a signal handler.
	fork unsafe	It cannot be called by a child process after fork(2) but
PARAMETERS		before exec(2).
	(Return Param)	Application number of terminal group.
	appln
	label	Queue label name.
	queuep	Data queue number (or ZCOM error, if negative)
NOTES	The data queue returned should only be used for terminals within the
	specified application group (there is NO queue ownership validation
	when it is used in ltqdget and ltqdput). An application value of zero
	means terminals in ALL application groups. This zero application value
	allows the queue to be used to store global data for all terminals in the
	system.

Routine zltqueue returns an already assigned queue if the queue label matches a previously assigned queue (in this case the specified application number is not used or validated). This provides a facility to share a data queue between different programs and enables program restartability.

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