--- dawn_3_85d/postscript.cc.ORIG	Thu Mar 20 15:43:37 2003
+++ dawn_3_85d/postscript.cc	Sun May 18 01:58:05 2003
@@ -464,6 +464,8 @@
 			isFileOpen = 1 ;
 			out_p = &fout ;
 		}
+	} else {
+		filename = "-";
 	}
 
 		//----- set paramaters for defining window and drawing area