postreverse(1)          UNIX System V(LP Print Service)          postreverse(1)


NAME
      postreverse - reverse the page order in a PostScript file

SYNOPSIS
      /usr/lib/lp/postscript/postreverse [options] [file]

DESCRIPTION
      The postreverse filter reverses the page order in files that conform to
      Adobe's Version 1.0 or Version 2.0 file structuring conventions, and
      writes the results on the standard output.  Only one input file is
      allowed and if no file is specified, the standard input is read.  The
      following options are understood:

      -o list   Select pages whose numbers are given in the comma-separated
                list.  The list contains single numbers N and ranges N1 - N2.
                A missing N1 means the lowest numbered page, a missing N2 means
                the highest.

      -r        Don't reverse the pages in file.

      The postreverse filter can handle a limited class of files that violate
      page independence, provided all global definitions are bracketed by
      %%BeginGlobal and %%EndGlobal comments.  In addition, files that mark the
      end of each page with %%EndPage: label ordinal comments will also reverse
      properly, provided the prologue and trailer sections can be located.  If
      postreverse fails to find an %%EndProlog or %%EndSetup comment, the
      entire file is copied, unmodified, to the standard output.

      Because global definitions are extracted from individual pages and put in
      the prologue, the output file can be minimally conforming, even if the
      input file wasn't.

EXAMPLES
      To select pages 1 to 100 from file and reverse the pages:

            postreverse -o1-100 file

      To print four logical pages on each physical page and reverse all the
      pages:

            postprint -n4 file | postreverse

      To produce a minimally conforming file from output generated by dpost
      without reversing the pages:

            dpost file | postreverse -r

DIAGNOSTICS
      An exit status of 0 is returned if file was successfully processed.





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postreverse(1)          UNIX System V(LP Print Service)          postreverse(1)


NOTES
      No attempt has been made to deal with redefinitions of global variables
      or procedures.  If standard input is used, the input file will be read
      three times before being reversed.

SEE ALSO
      download(1), dpost(1), postdaisy(1), postdmd(1), postio(1), postmd(1),
      postprint(1), posttek(1)














































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