=head1	NAME

pdfcmb - PDF change MediaBox

=head1	SYNOPSIS

pdfcmb I<llx> I<lly> I<urx> I<ury>

=head1	DESCRIPTION

This program changes the MediaBox entry in a PDF file.
It runs as a filter, reading a PDF file from standard input and
writing a cropped PDF file to standard output.

If one cuts a PostScript file using epsffit and converts it to PDF
using ps2pdf the resulting PDF is not yet cropped to the bounding
box established by epsffit. The pdfcmb program does this final
cropping step on PDFs generated using epsffit/ps2pdf.

Note: See the RESTRICTIONS section.

=head1	RETURN VALUE

The program returns exit code 0 on success, a positive value on errors.

=head1	EXAMPLES

  epsffit 16 16 464 352 < a4landscape.ps > a5landscape.ps
  ps2pdf a5landscape.ps x.pdf
  pdfcmb 0 0 480 368 < x.pdf > a5landscape.pdf

=head1	RESTRICTIONS

The program is only intended for for PDF files generated by
ps2pdf from PS files which were cropped using epsffit as shown
in the example above.

The program simply replaces a string in the /MediaBox entry
in the PDF file. The new media box string must be less than or
equal in length to the existing media box string in the file.

=head1	NOTES

=head1	SEE ALSO

The manual dkt.pdf located somewhere "near" the pdfcmb binary contains
detailed information.
If

  which pdfcmb

finds the binary /usr/local/bin/pdfcmb the manual resides in
/usr/local/lib/docu/dkt/dkt.pdf.

=head1	AUTHOR

Dirk Krause

=head1	COPYRIGHT AND LICENSE

Copyright (c) 2001-2008, Dirk Krause
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above
   copyright notice, this list of conditions and the
   following disclaimer.

 * Redistributions in binary form must reproduce the above
   copyright notice, this list of conditions and the following
   disclaimer in the documentation and/or other materials
   provided with the distribution.

 * Neither the name of the Dirk Krause nor the names of
   contributors may be used to endorse or promote products
   derived from this software without specific prior written
   permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

=head1	LAST MODIFICATION

2005/03/22
