Bump date for previous; use more macros.

share/man/man7/intro.7

@@ -1,4 +1,4 @@
-.\"	$NetBSD: intro.7,v 1.12 2004/01/30 22:47:02 christos Exp $
+.\"	$NetBSD: intro.7,v 1.13 2004/01/30 23:28:45 wiz Exp $
 .\"
 .\" Copyright (c) 1983, 1990, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -29,7 +29,7 @@
 .\"
 .\"     @(#)intro.7	8.1 (Berkeley) 6/5/93
 .\"
-.Dd May 22, 2000
+.Dd January 30, 2004
 .Dt INTRO 7
 .Os
 .Sh NAME
@@ -76,7 +76,7 @@ available signals under
 .Nx
 .It Sy sticky
 sticky bit
-.Dv ( S_ISVTX )
+.Pq Dv S_ISVTX
 handling
 .It Sy symlink
 symbolic link handling