Purge Current Purchase Orders
	
	The purpose for purging the P/O files is to keep the current (working) files
	more compact, which decreases searching time also. Depending on your requirements,
	it is recommended that you keep the previous 6 months of P/Os, or all since the
	first of the year. With regular archiving, you can always access older P/Os
	from the history file.

	Purge means remove the P/O and its line items from the Current (working)
	files.

	Only Closed P/Os (Delete status) that are already in the History file
	(archived) may be purged. 
	
	Also with Greux, if a P/O has not been archived (not in History),
	it will NOT be purged either.

	Also a P/O may be purged even if it hasn't been flagged as printed.
	If you need to print it, do it from the history files.

	The P/O date used for the cutoff date is the last receipt date, or 
	if never received, the expected date.

	With todays fast computers and large storage capacities, you may 
	choose to purge only once a year, after archiving of course.