% $Id: incl2.5.tex 868 2021-11-04 17:23:17Z karl $
% Public domain.
% Trivial PDF-2 file.
\pdfcompresslevel=0 \pdfobjcompresslevel=0 % get greppable output
\pdfoutput=1

% The default is 2.4, since \pdfminorversion is 4 (from 1.4).
% Randomly try 2.5.
\pdfmajorversion=2 \pdfminorversion=5

% typeset something.
\hrule width1pt height1pt depth0pt
\end