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diff --git a/postscript/prologues/cropmarks.ps b/postscript/prologues/cropmarks.ps
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+%
+% Center pages, based on pageheight and pagewidth, and redefine showpage
+% to put cropmarks at each corner. Device dependent code to expand the
+% paper size goes in procedure expandpagesize. Currently only supports
+% a Linotronic 200P typesetter using 12 inch wide paper. You'll have to
+% add code to expandpagesize to support different typesetters or even a
+% 200P that's running differently.
+%
+
+/CropmarkDict 40 dict dup begin
+
+/expandpage true def
+/magnification 1 def
+/pageheight 11.0 def
+/pagewidth 8.5 def
+/scaletofit false def
+/scaling 1 def
+
+/marklength .3 def	% inches
+/markstart .125 def	% inches
+/markend .04 def	% inches
+/marklinewidth .25 def	% points
+
+/inch {72 mul} def
+/min {2 copy gt {exch} if pop} def
+/max {2 copy lt {exch} if pop} def
+
+/setup {
+	/markspace markstart marklength add markend add inch marklinewidth add def
+	/totalheight pageheight inch markspace 2 mul add def
+	/totalwidth pagewidth inch markspace 2 mul add def
+
+	pagedimensions
+	checkpagesize
+	/scaling getscaling def
+	xcenter ycenter translate
+	scaling scaling scale
+	pagewidth inch 2 div neg pageheight inch 2 div neg translate
+	clippage
+} def
+
+/pagedimensions {
+	clippath pathbbox newpath
+	4 -1 roll exch 4 1 roll 4 copy
+	sub /width exch def
+	sub /height exch def
+	add 2 div /xcenter exch def
+	add 2 div /ycenter exch def
+} def
+
+/checkpagesize {
+	height totalheight lt width totalwidth lt or expandpage and {
+		expandpagesize
+		pagedimensions
+	} if
+} def
+
+/expandpagesize {	% device dependent code
+	/Product statusdict begin /product where {pop product}{()} ifelse end def
+
+	Product (Linotype) eq {		% Linotronic 200P and other models?
+		statusdict /setpageparams known {
+			/maxwidth 12.0 inch def		% 12 inch wide paper?
+			totalheight maxwidth le {
+				totalheight
+				totalwidth
+				maxwidth totalheight sub 2 div
+				0
+			}{
+				totalwidth maxwidth min
+				totalheight
+				maxwidth totalwidth maxwidth min sub 2 div
+				1
+			} ifelse
+			statusdict /setpageparams get exec
+		} if
+	} if
+} def
+
+/getscaling {
+	scaletofit
+		{height totalheight div width totalwidth div min 1 min}
+		{1}
+	ifelse
+} def
+
+/clippage {
+	newpath
+	0 0 moveto
+	pagewidth inch 0 rlineto
+	0 pageheight inch rlineto
+	pagewidth neg inch 0 rlineto
+	closepath clip
+	newpath
+} def
+
+/cropmark {
+	gsave
+	translate
+	rotate
+	marklinewidth dup translate
+	0 0 transform round exch round exch itransform translate
+	markstart inch 0 moveto marklength inch 0 rlineto stroke
+	0 markstart inch moveto 0 marklength inch rlineto stroke
+	grestore
+} bind def
+
+/@PreviousShowpage /showpage load def
+
+end def
+
+%
+% Cropmarks - in the default coordinate system.
+%
+
+/showpage {
+	gsave
+	CropmarkDict begin
+		initgraphics
+		marklinewidth setlinewidth
+		xcenter ycenter translate
+		scaling scaling scale
+		0 pagewidth inch 2 div pageheight inch 2 div cropmark
+		90 pagewidth inch neg 2 div pageheight inch 2 div cropmark
+		180 pagewidth inch neg 2 div pageheight inch 2 div neg cropmark
+		270 pagewidth inch 2 div pageheight inch 2 div neg cropmark
+		@PreviousShowpage
+	end
+	grestore
+} bind def
+