\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{duplicat}           
% M.Piff@sheffield.ac.uk
% This package marks each page of the dvi file with its sequence number.
% Useful if there are duplicate page numbers in the output, eg,
% 1, 2, 3, 1, 2, 3, 4, 5, 6, ...
% become
% 1.1, 2.2, 3.3, 1.4, 2.5, 3.6, 4.7, 5.8, 6.9, ...
% 
% These numbers do not appear in the page number itself, but can be used
% in the driver command to select a page range, eg, in emTeX, use
% dvihplj filename /b1.4 /e 4.7
% 
% If you are using dvips, this package is unnecessary, since it uses the
% convention that the avove pages have names
% 1, 2, 3, 1.1, 2.1, 3.1, 4, 5, 6, ...
% where .0 is optional (first occurrence of that page number).
% dvips -p1.1  -l4 filename
%
% This file is placed in the public domain.  No provision is made for
% support of the use of the facilities herein.
%
\let\duplicat@tmp\relax
\DeclareOption{dvips}{\let\duplicat@tmp\endinput}
\ProcessOptions                                 

\duplicat@tmp
\let\duplicat@tmp\undefined

\global\let\dup@shipout\shipout
\gdef\shipout{\global\advance\count1 by 1\relax\dup@shipout}

\endinput