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+.\" $XFree86: xc/programs/xvidtune/xvidtune.man,v 3.14 2001/08/13 19:35:01 dawes Exp $
+.\"
+.\" Copyright (c) 1995  Kaleb S. KEITHLEY
+.\"
+.\" Permission is hereby granted, free of charge, to any person obtaining
+.\" a copy of this software and associated documentation files (the
+.\" "Software"), to deal in the Software without restriction, including
+.\" without limitation the rights to use, copy, modify, merge, publish,
+.\" distribute, sublicense, and/or sell copies of the Software, and to
+.\" permit persons to whom the Software is furnished to do so, subject to
+.\" the following conditions:
+.\" 
+.\" The above copyright notice and this permission notice shall be included
+.\" in all copies or substantial portions of the Software.
+.\" 
+.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+.\" IN NO EVENT SHALL Kaleb S. KEITHLEY BE LIABLE FOR ANY CLAIM, DAMAGES OR
+.\" OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+.\" ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+.\" OTHER DEALINGS IN THE SOFTWARE.
+.\" 
+.\" Except as contained in this notice, the name of Kaleb S. KEITHLEY shall
+.\" not be used in advertising or otherwise to promote the sale, use or
+.\" other dealings in this Software without prior written authorization
+.\" from Kaleb S. KEITHLEY.
+.\"
+.TH xvidtune 1 __vendorversion__
+.SH NAME
+xvidtune \- video mode tuner for XFree86
+.SH SYNOPSIS
+.B xvidtune
+[
+.B -show
+|
+.B -prev
+|
+.B -next
+|
+.B -unlock
+] [
+.I \-toolkitoption
+\&.\|.\|. ]
+.SH DESCRIPTION
+Xvidtune is a client interface to the XFree86 X server video mode
+extension (XFree86-VidModeExtension).
+.PP
+When given one of the non-toolkit options, xvidtune provides
+a command line interface to either switch the video mode.
+.PP
+Without any options (or with only toolkit options) it
+presents the user with various buttons and sliders that can be
+used to interactively adjust existing video modes.
+It will also print the settings in a format suitable for inclusion
+in an XF86Config file.
+.PP
+Normally the XFree86 X servers only allow changes to be made with
+the XFree86-VidModeExtension from clients connected via a local
+connection type.
+.PP
+Note:  The original mode settings can be restored by pressing the `R' key,
+and this can be used to restore a stable screen in situations where the
+screen becomes unreadable.
+.PP
+The available buttons are:
+.PP
+.nf
+.B Left
+.B Right
+.B Up
+.B Down
+.fi
+.RS 10
+Adjust the video mode so that the display will be moved in the
+appropriate direction.
+.RE
+.PP
+.nf
+.B Wider
+.B Narrower
+.B Shorter
+.B Taller
+.fi
+.RS 10
+Adjust the video mode so that the display size is altered
+appropriately.
+.RE
+.TP 10
+.B Quit
+Exit the program.
+.TP 10
+.B Apply
+Adjust the current video mode to match the selected settings.
+.TP 10
+.B Auto
+Cause the Up/Down/Right/Left, Wider/Narrower/Shorter/Taller, Restore,
+and the special S3 buttons to be applied immediately.
+This button can be toggled.
+.TP 10
+.B Test
+Temporarily switch to the selected settings.
+.TP 10
+.B Restore
+Return the settings to their original values.
+.TP 10
+.B Fetch
+Query the server for its current settings.
+.TP 10
+.B Show
+Print the currently selected settings to stdout in XF86Config
+"Modeline" format.  The primary selection is similarly set.
+.TP 10
+.B Next
+Switch the Xserver to the next video mode.
+.TP 10
+.B Prev
+Switch the Xserver to the previous video mode.
+.PP
+For some S3-based cards (964 and 968) the following are also available:
+.TP 10
+.B InvertVCLK
+Change the VCLK invert/non-invert state.
+.TP 10
+.B EarlySC
+Change the Early SC state.  This affects screen wrapping.
+.PP
+.nf
+.B BlankDelay1
+.B BlankDelay2
+.fi
+.RS 10
+Set the blank delay values.  This affects screen wrapping.  Acceptable
+values are in the range 0\-7.  The values may be incremented or decremented
+with the `+' and `-' buttons, or by pressing the `+' or `-' keys in the
+text field.
+.RE
+.PP
+For S3-864/868 based cards \fIInvertVCLK\fP and \fIBlankDelay1\fP may
+be useful.  For S3 Trio32/Trio64 cards only \fIInvertVCLK\fP is available.
+At the moment there are no default settings available for these chips 
+in the video mode extension and thus this feature is disabled in xvidtune.
+It can be enabled by setting any of the optional S3 commands in the
+screen section of XF86Config, e.g. using
+.RS 10
+.B blank_delay \fI"\(**"\fP 0
+.RE
+.SH OPTIONS
+\fIxvidtune\fP accepts the standard X Toolkit command line options as well
+as the following:
+.TP 10
+.B \-show
+Print the current settings to stdout in XF86Config
+"Modeline" format and exit.
+.TP 10
+.B \-prev
+Switch the Xserver to the previous video mode.
+.TP 10
+.B \-next
+Switch the Xserver to the next video mode.
+.TP 10
+.B \-unlock
+Normally, \fIxvidtune\fP will disable the switching of video modes
+via hot-keys while it is running.  If for some reason the program
+did not exit cleanly and they are still disabled, the program can
+be re-run with this option to re-enable the mode switching key
+combinations.
+.SH SEE ALSO
+XF86Config(4/5), XFree86(1)
+.SH AUTHORS
+Kaleb S. Keithley, X Consortium.
+.br
+Additions and modifications by Jon Tombs, David Dawes, and Joe Moss.
+.SH BUGS
+X Error handling, i.e. when the server does not allow xvidtune
+clients to write new modes, could be better.