-.\" $NetBSD: tetris.6,v 1.4 1997/09/01 23:26:11 mikel Exp $
+.\" $NetBSD: tetris.6,v 1.9 2002/09/26 18:32:05 wiz Exp $
.\"
.\" Copyright (c) 1992, 1993
.\" The Regents of the University of California. All rights reserved.
.Nd the game of tetris
.Sh SYNOPSIS
.Nm
-.Op Fl s
+.Op Fl ps
.Op Fl k Ar keys
.Op Fl l Ar level
.Sh DESCRIPTION
.Pp
The default control keys are as follows:
.Pp
-.Bl -tag -width "<space>" -compact -offset indent
+.Bl -tag -width "xxspacexx" -compact -offset indent
.It j
move left
.It k
rotate 1/4 turn counterclockwise
.It l
move right
-.It <space>
+.It Aq space
drop
.It p
pause
Select a level of play.
.It Fl s
Display the top scores.
+.It Fl p
+Switch on previewing of the shape that will appear next.
.El
.Pp
.Sh PLAY
(As the game goes on, things speed up,
no matter what your initial selection.)
When this shape
-.Dq "touches down"
+.Dq touches down
on the bottom of the field, another will appear at the top.
.Pp
You can move shapes to the left or right, rotate them counterclockwise,
.Pp
Manual adapted from the original entry written by Nancy L. Tinkham and
Darren F. Provine.
+.Pp
+Code for previewing next shape added by Hubert Feyrer in 1999.