Whoops, forgot cat4/alpha when I added man4/alpha.

src/etc/mtree/4.4BSD.dist

@@ -1,4 +1,4 @@
-#	$OpenBSD: 4.4BSD.dist,v 1.43 1998/03/08 16:33:42 millert Exp $
+#	$OpenBSD: 4.4BSD.dist,v 1.44 1998/03/09 01:45:53 millert Exp $
 
 /set type=dir uname=root gname=wheel mode=0755
 # .
@@ -922,6 +922,11 @@ cat3
 # ./usr/share/man/cat4
 cat4
 
+# ./usr/share/man/cat4/alpha
+alpha
+# ./usr/share/man/cat4/alpha
+..
+
 # ./usr/share/man/cat4/amiga
 amiga
 # ./usr/share/man/cat4/amiga