--- lib/gs_init.ps.orig	Tue Jun  5 16:42:40 2001
+++ lib/gs_init.ps	Wed Jun 20 04:16:46 2001
@@ -1247,7 +1247,7 @@
 % Set the default screen and BG/UCR.
 /.setdefaultbgucr {
   systemdict /setblackgeneration known {
-    { pop 0 } dup setblackgeneration setundercolorremoval
+    {} dup setblackgeneration setundercolorremoval
   } if
 } bind def
 /.useloresscreen {	% - .useloresscreen <bool>
@@ -1799,3 +1799,7 @@
 (END GC) VMDEBUG
 
 % The interpreter will run the initial procedure (start).
+
+% unofficial patch:
+% make it possible to print from within acroread pdf viewer
+/Default currenthalftone /Halftone defineresource pop