1996-01-27 17:52:20 +00:00
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.\"
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.\" Copyright (C) 1996
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.\" interface business GmbH
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.\" Tolkewitzer Strasse 49
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.\" D-01277 Dresden
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.\" F.R. Germany
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.\"
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.\" All rights reserved.
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.\"
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.\" Written by Joerg Wunsch <joerg_wunsch@interface-business.de>
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.\"
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY
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.\" EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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.\" OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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.\" BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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.\" LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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.\" USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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.\" DAMAGE.
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.\"
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1997-10-27 12:25:38 +00:00
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.\" $Id: wormcontrol.8,v 1.9 1997/06/23 04:52:12 steve Exp $
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1996-01-27 17:52:20 +00:00
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.\"
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.\" arrgh, hilit19 needs this" :-(
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1997-06-23 04:52:13 +00:00
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.Dd January 27, 1996
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1996-01-27 17:52:20 +00:00
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.Os
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.Dt WORMCONTROL 8
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.Sh NAME
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.Nm wormcontrol
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.Nd control the CD-R driver
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.Sh SYNOPSIS
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.Nm wormcontrol
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.Op Fl f Ar device
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.Ar command
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.Op Ar params...
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.Sh DESCRIPTION
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The
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.Nm
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utility is used to control the behaviour of the
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.Xr worm 4
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driver in order to adjust various parameters of a recordable CD
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.Pq CD-R .
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.Pp
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Unlike many other devices, CD-R's require a very strict handling order.
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Prior to writing data, the speed of the drive must be selected, and
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the drive can also be turned into a
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.Ql dummy
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mode, where every action is only performed with the laser turned off.
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This way, it's possible to test whether the environment provides a
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sufficiently high data flow rate in order to actually burn the CD-R,
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without destroying the medium in case of a catastrophic failure.
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.Pp
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In order to write a new track, the drive must be told whether the new
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track will become an audio or a data track. Audio tracks are written
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with a block size of 2352 bytes, while data tracks have 2048 bytes per
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1997-05-19 17:37:30 +00:00
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block. For audio tracks, the driver does further need to know
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1996-01-27 17:52:20 +00:00
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whether the data are recorded with a preemphasis.
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.Pp
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Once all tracks of a session have been written, the disk must be
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.Em fixated .
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This writes the table of contents and leadout information to the disk.
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The disk won't be usable without doing this.
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1997-10-27 12:25:38 +00:00
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.Pp
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The following options are available:
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.Bl -tag -width ident
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.It Fl f Ar device
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Use
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.Ar device
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instead of the default
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.Pa /dev/rworm0 .
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1996-01-27 17:52:20 +00:00
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.It prepdisk Ar single \&| double Op Ar dummy
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Prepare the disk for recording. This must be done before any tracks
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can be prepared, and remains in effect until the session has been
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fixated. Either single speed
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.Pq for audio data
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or double speed
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.Pq for CD-ROM data
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must be selected, and optionally, the argument
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.Ar dummy
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can be used to tell the drive to keep the laser turned off, for testing.
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.It track Ar audio \&| data Op Ar preemp
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Inform the driver about the format of the next track. Either
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.Ar audio
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or
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.Ar data
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.Pq CD-ROM
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must be selected, with an optional argument
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.Ar preemp
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that must be specified for an audio track where data records with
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preemphasis are being used. Once this command has been successfully
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specified, the track is ready for being written.
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.It fixate Ar toc-type Op Ar onp
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Once all tracks have been written, this closes the current session.
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The argument
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.Ar toc-type
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is a single digit between 0 and 4, with the following meaning:
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.Bl -item
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.It
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0 CD audio
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.It
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1 CD-ROM
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.It
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2 CD-ROM with first track in mode 1
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.It
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3 CD-ROM with first track in mode 2
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.It
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4 CDI
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.El
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.Pp
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The optional argument
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.Ar onp
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stands for
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.Dq open next program area ,
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which means that the next session on the CD-R will be opened and can
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be recorded in the future. Otherwise, the CD-R will be closed and
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remains unchangeable.
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.El
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.Sh DIAGNOSTICS
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Error codes for the underlying
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.Xr ioctl 2
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commands are printed by the
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1997-10-27 12:25:38 +00:00
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.Xr err 3
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1996-01-27 17:52:20 +00:00
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facility.
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.Sh EXAMPLES
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The typical sequence of burning a data CD-R looks like:
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.Bd -literal
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# wormcontrol prepdisk double
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# wormcontrol track data
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1996-11-06 13:35:27 +00:00
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# rtprio 5 team -v 1m 5 < cdrom.image | rtprio 5 dd of=/dev/rworm0 obs=20k
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1996-01-27 17:52:20 +00:00
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# wormcontrol fixate 1
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.Ed
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.Pp
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Note that the
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.Xr dd 1
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command above is mainly used in order to
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.Dq slice
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the data stream. It's particularly useful when recording audio data
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with their rather unusual blocksize. Since the underlying device is a
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.Em raw
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device, the blocksize used in that command must be an integral multiple
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of the CD-R blocksize.
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.Pp
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The mentioned command
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.Xr team 1
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is not part of the base system, but comes extremely handy in order to
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pipe a constant data stream into the CD recorder.
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.Sh SEE ALSO
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.Xr dd 1 ,
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.Xr team 1 ,
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1997-01-20 00:03:00 +00:00
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.Xr ioctl 2 ,
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1997-10-27 12:25:38 +00:00
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.Xr err 3 ,
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1997-01-20 00:03:00 +00:00
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.Xr worm 4
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1996-11-06 13:35:27 +00:00
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.Pp
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.Pa /usr/share/examples/worm/*
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1996-01-27 17:52:20 +00:00
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.Sh HISTORY
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.Nm Wormcontrol
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is currently under development.
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.Sh AUTHOR
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The program has been contributed by
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1996-11-06 13:35:27 +00:00
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.ie t J\(:org Wunsch,
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.el Joerg Wunsch,
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1996-01-27 17:52:20 +00:00
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Dresden.
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