Sort SYNOPSIS. New sentence, new line. use more markup. Grammar fixes.

share/man/man4/joy.4

@@ -1,4 +1,4 @@
-.\" $NetBSD: joy.4,v 1.6 2004/12/02 14:33:31 xtraeme Exp $
+.\" $NetBSD: joy.4,v 1.7 2004/12/02 15:02:37 wiz Exp $
 .\"
 .\" Copyright (c) 1996 Matthieu Herrb
 .\" All rights reserved.
@@ -35,54 +35,55 @@
 .Nm joy
 .Nd game adapter driver
 .Sh SYNOPSIS
+.Cd "joy* at acpi?"
+.Cd "joy* at eso?"
 .Cd "joy0 at isa? port 0x201"
 .Cd "joy* at isapnp?"
 .Cd "joy* at ofisa?"
 .Cd "joy* at pci?"
 .Cd "joy* at pnpbios? index ?"
-.Cd "joy* at eso?"
-.Cd "joy* at acpi?" 
 .Sh DESCRIPTION
 This driver provides access to the game adapter.
-The lower bit in the
-minor device number selects the joystick: 0 is the first joystick and
-1 is the second.
+The lower bit in the minor device number selects the joystick: 0
+is the first joystick and 1 is the second.
 .Pp
 The game control adapter allows up to two joysticks to be attached to
-the system.  The adapter plus the driver convert the present resistive
-value to a relative joystick position.  On receipt of an output signal,
-four timing circuits are started.  By determining the time required for
-the circuit to time-out (a function of the resistance), the paddle
-position can be determined.  The adapter could be used as a general
-purpose I/O card with four analog (resistive) inputs plus four digital
-input points.
+the system.
+The adapter plus the driver convert the present resistive value to
+a relative joystick position.
+On receipt of an output signal, four timing circuits are started.
+By determining the time required for the circuit to time-out (a
+function of the resistance), the paddle position can be determined.
+The adapter could be used as a general purpose I/O card with four
+analog (resistive) inputs plus four digital input points.
 .Pp
 Applications may call
 .Xr ioctl 2
 on a game adapter driver file descriptor
 to set and get the offsets of the two potentiometers and the maximum
-time-out value for the circuit.  The
+time-out value for the circuit.
+The
 .Xr ioctl 2
 commands are listed in
 .Aq Pa machine/joystick.h
 and currently are:
 .Pp
 .Bl -tag -width JOY_GET_X_OFFSET -compact
-.It JOY_SETTIMEOUT
+.It Dv JOY_SETTIMEOUT
 Sets the maximum time-out for the adapter.
-.It JOY_GETTIMEOUT
+.It Dv JOY_GETTIMEOUT
 Returns the current maximum time-out.
-.It JOY_SET_X_OFFSET
+.It Dv JOY_SET_X_OFFSET
 Sets an offset on X value.
-.It JOY_GET_X_OFFSET
+.It Dv JOY_GET_X_OFFSET
 Returns the current X offset.
-.It JOY_SET_Y_OFFSET
+.It Dv JOY_SET_Y_OFFSET
 Sets an offset on Y value.
-.It JOY_GET_Y_OFFSET
+.It Dv JOY_GET_Y_OFFSET
 Returns the current Y offset.
 .El
 .Pp
-All this commands take an integer parameter.
+All these commands take an integer parameter.
 .Pp
 .Xr read 2
 on the file descriptor returns a
@@ -113,13 +114,14 @@ The b1 and b2 fields in struct joystick are set to 1 if the
 corresponding button is down, 0 otherwise.
 .Pp
 The x and y coordinates are supposed to be between 0 and 255 for a
-good joystick and a good adapter.  Unfortunately, because of the
+good joystick and a good adapter.
+Unfortunately, because of the
 hardware hack that is used to measure the position (by measuring the
 time needed to discharge an RC circuit made from the joystick's
 potentiometer and a capacitor on the adapter), calibration
 is needed to determine exactly what values are returned for a specific
-joystick/adapter combination.  Incorrect hardware can yield negative or
-> 255 values.
+joystick/adapter combination.
+Incorrect hardware can yield negative or values greater than 255.
 .Pp
 A typical calibration procedure uses the values returned at lower
 left, center and upper right positions of the joystick to compute the
@@ -144,6 +146,7 @@ second joystick
 .Sh AUTHORS
 Jean-Marc Zucconi wrote the
 .Fx
-driver.  Matthieu Herrb ported it to
+driver.
+Matthieu Herrb ported it to
 .Nx
 and wrote this manual page.