Usage: ps_add_date [options] file1 [file2]
 
	ps_add_date adds the current date, time, user and filename to a
	PostScript file. 
 
	options:	-h =>	this help screen
			-d =>	do not remove directoryname from filename
			-p =>	put current directory in front of filename
			-f =>	force labeling.
			-s =>	run silently
			-r =>	Reverse mode: remove date stamp.

	if only one file is given the old file will be overwritten.
	If -d and -p are set at the same time only -p will be used.

	FUTURE ENHANCEMENTS:
	o	support multiple sheet drawings

Author: Olaf Corten, the Netherlands
E-Mail: olafc@molding.fico.nl or ocorten@knoware.nl

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# History
#
# 991209 Not a Pro/E file error is now always shown
# 990429 Silently is now more silent.
# 980615 Added -r option.
# 970506 Now label only added when the name Pro/ENGINEER is present in the
#	 header. Added -s option.
# 970131 Fixed for multi-sheet postscript file
# 970109 Fixed for R17 Postscript files with Page setup.
# 960124 Added -d and -p option.
# 951020 Added Filename to format.
# 951013 Added checks on input file (exist & Postscript)
# 950825 first version
#
# This scripts adds the date and time to a PostScript file.
#
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