Add reference to lp(4).

svn path=/head/; revision=40405

share/man/man4/man4.i386/lpt.4

@@ -29,7 +29,7 @@
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
 .\"	from: lpt.4,v 1.1 1993/08/06 10:34:12 cgd Exp
-.\"	$Id$
+.\"	$Id: lpt.4,v 1.6 1997/03/07 02:49:49 jmg Exp $
 .\"
 .Dd August 28, 1993
 .Dt LPT 4 i386
@@ -68,6 +68,7 @@ driver, which is now defunct.
 first parallel port driver
 .El
 .Sh SEE ALSO
+.Xr lp 4 ,
 .Xr lptcontrol 8
 .Sh BUGS
 There are lots of them, especially in cheap parallel port implementations.