--- Makefile	(revision 359763)
+++ Makefile	(working copy)
@@ -28,6 +28,8 @@ 
 DATADIR=	${LOCALBASE}/share/doom
 PLIST_SUB=	PORTVERSION=${PORTVERSION}
 
+SUB_FILES=	pkg-message
+
 OPENGL_CONFIGURE_ENABLE=	gl
 OPENGL_USE=	GL=yes
 
--- files/pkg-message.in	(revision 0)
+++ files/pkg-message.in	(working copy)
@@ -0,0 +1,12 @@ 
+#############################################################
+
+1) This port does not install any doom .wad ,
+so you have to download it and run prboom -iwad /path/to/doom.wad 
+or put it in /usr/local/share/games/doom/ !
+
+2) Prboom is very out of date (http://prboom.sourceforge.net), so 
+if you like prboom and  want a newer version 
+you should look at http://prboom-plus.sourceforge.net!
+
+3)Have fun!
+############################################################