GTM$LOCK, GMT$INCLOCK, GTM$DECLOCK, GTM$ZALLOC, and GTM$ZDEALLOC can operate on one or more MUMPS names. When the list contains more than one name, a delimiting argument with a value of zero (0) must precede the elements of every name except the first.

Example:

	$DESCRIPTOR(gname,"A");
	$DESCRIPTOR(sub,"1");
	$DESCRIPTOR(namb,"B");
	gtm$lock(5,GTMI$_GLOBAL, &gname,0,GTMI$_LOCAL,&namb,&sub,&sub);	
	

This corresponds to the MUMPS statement:

	L (^A,B(1,1)):5