--- catalog.orig	Sat Apr  4 17:00:42 1998
+++ catalog	Sat Apr  4 17:00:59 1998
@@ -7,5 +7,9 @@
 PUBLIC "-//FreeBSD//DTD linuxdoc//EN" "freebsd-1.0.dtd"
 PUBLIC "-//FreeBSD//DTD linuxdoc 1.0//EN" "freebsd-1.0.dtd"
 PUBLIC "-//FreeBSD//DTD linuxdoc 1.1//EN" "freebsd-1.1.dtd"
+
+-- For the XFree86 customized version --
+PUBLIC "-//XFree86//DTD linuxdoc//EN" "xfree86.dtd"
+
 -- DTDDECL "-//FreeBSD//DTD linuxdoc//EN" "linuxdoc.dec" --
 CATALOG "../iso8879/catalog"