 PMD is the Postmortem Dump task.  When a task aborts, PMD generates
 a dump of its header and address space to aid in debugging.
 
 You can make a task eligible for a Postmortem Dump in any of three ways:
 
    o	task build the task with the /PM switch on the task image file
        or DCL LINK/POSTMORTEM command
    o	install the task with the /PMD=YES switch, or DCL INSTALL/POSTMORTEM
        command
    o	abort the task with the /PMD switch or DCL ABORT/POSTMORTEM
 
 Postmortem dumps are put on the system disk under UFD [1,4] in the file
 taskname.PMD and are automatically spooled by PMD.
 
			NOTE
 
	The print spooler automatically deletes all
	files with the type .PMD after printing them.
 
 PMD also produces Snapshot Dumps of running tasks.  See HELP PMD SNAPSHOT 
 
 See Appendix D of the RSX-11M/M-PLUS Task Builder Manual for more information
 on PMD.
 
2 SNAPSHOT
 A running task can issue a macro call to generate a dump of its header and 
 address space to aid in debugging.
 
 To generate a Snapshot Dump you must issue two macro calls in your program.
 The SNPBK$ macro must be specified in a data area to define the Snapshot
 Dump Control Block, and the SNAP$ macro must be specified at each place in
 the code where a Snapshot Dump is desired.
 
	SNPBK$	dev,unit,ctl,efn,id,L1,H1,L2,H2,L3,H3,L4,H4
 
	SNAP$	ctl,efn,id,L1,H1,L2,H2,L3,H3,L4,H4
 
	dev,	device and unit			efn	event flag to use
	unit	 for dump file
						id	number to identify
	ctl	what to dump:				 a particular SNAP$
		SC.HDR header
		SC.LUN LUN table		L1,H1	memory limits for
		SC.OVL overlay segments		L2,H2	 dumping up to four
		SC.STK stack			L3,H3	 separate blocks of
		SC.WRD memory in words/RAD50	L4,H4	 memory
		SC.BYT memory in bytes/ASCII	
 
 Snapshot dumps are put on the specified device under the task's UFD in the file
 taskname.PMD and are automatically spooled.
 
			NOTE
 
	The print spooler automatically deletes all
	files with the type .PMD after printing them.
 
 See Appendix D of the RSX-11M/M-PLUS Task Builder Manual for more information
 on Snapshot Dumps.

