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postreverse(1)                   User Commands                  postreverse(1)



NAME
       postreverse - reverse the page order in a PostScript file

SYNOPSIS
       postreverse [-o list] [-r] [file]

       /usr/lib/lp/postscript/postreverse

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 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 com-
       ment, 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 was not.

OPTIONS
       -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. The page range is an expression of logical pages
                rather than physical sheets of paper. For example, if you  are
                printing  two  logical  pages  to a sheet, and you specified a
                range of 4, then two sheets of paper would  print,  containing
                four  page layouts. If you specified a page range of 3-4, when
                requesting two logical pages to a sheet; then only page 3  and
                page 4 layouts would print, and they would appear on one phys-
                ical sheet of paper.



       -r       Do not reverse the pages in file.



EXAMPLES
       Example 1: Examples of postreverse.

       o select pages 1 to 100 from file and reverse the pages:

       example% postreverse -o1-100 file

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

       example% postprint -n4 file | postreverse

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

       example% dpost file | postreverse -r

EXIT STATUS
       The following exit values are returned:

       0               Successful completion.



       non-zero        An error occurred.



ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:


       tab()    allbox;    cw(2.750000i)|     cw(2.750000i)     lw(2.750000i)|
       lw(2.750000i).  ATTRIBUTE TYPEATTRIBUTE VALUE AvailabilitySUNWpsf


SEE ALSO
       download(1),  dpost(1), postdaisy(1), postdmd(1), postio(1), postmd(1),
       postprint(1), posttek(1), attributes(5)

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.



SunOS 5.10                        9 Sep 1996                    postreverse(1)