<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
</head>
<body>
<div class="markdown-here-wrapper" data-md-url="" style="">
<p style="margin: 0px 0px 1.2em !important;">The <a
href="https://www.tug.org/applications/pdftex/NEWS">ChangeLog
of pdftex</a>, when enumerating the changes in <code style="font-family: Consolas, Inconsolata, Courier, monospace;margin: 0px 0.15em; padding: 0px 0.3em; white-space: pre-wrap; font-weight: 550; background-color: rgba(119, 119, 119, 0.3); border-radius: 3px; display: inline;">pdfTeX 3.14159265-2.6-1.40.17 (TeX Live 2016) (May 20, 2016)</code>,
says:</p>
<blockquote style="margin: 1.2em 0px;border-left: 4px solid
rgb(51, 117, 221); padding: 0px 1em; color: rgb(119, 119, 119);
quotes: none;">
<p style="margin: 0px 0px 1.2em !important;"> new primitive
\pdfsuppressptexinfo to omit PTEX.* keys from output;</p>
<p style="margin: 0px 0px 1.2em !important;"> the value is a
bitmask:</p>
<p style="margin: 0px 0px 1.2em !important;"> % 1 ->
PTEX.Fullbanner</p>
<p style="margin: 0px 0px 1.2em !important;"> % 2 ->
PTEX.FileName</p>
<p style="margin: 0px 0px 1.2em !important;"> % 4 ->
PTEX.PageNumber</p>
<p style="margin: 0px 0px 1.2em !important;"> % 8 ->
PTEX.InfoDict (/Producer /Creator /CreationDate /ModDate
/Trapped)</p>
</blockquote>
<p style="margin: 0px 0px 1.2em !important;">I wrote the following
code:</p>
<pre style="font-family: Consolas, Inconsolata, Courier, monospace;font-size: 1em; line-height: 1.2em;margin: 1.2em 0px;"><code style="font-family: Consolas, Inconsolata, Courier, monospace;margin: 0px 0.15em; padding: 0px 0.3em; white-space: pre-wrap; font-weight: 550; background-color: rgba(119, 119, 119, 0.3); border-radius: 3px; display: inline;white-space: pre; overflow: auto; border-radius: 3px; border: 1px solid rgb(204, 204, 204); padding: 0.5em 0.7em; display: block !important;">\documentclass[12pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\author{Joe Six Pack}
\title{Lecture 1}
\pdfsuppressptexinfo15
\begin{document}
Hello world!
\end{document}
</code></pre>
<p style="margin: 0px 0px 1.2em !important;">I have this pdftex:</p>
<pre style="font-family: Consolas, Inconsolata, Courier, monospace;font-size: 1em; line-height: 1.2em;margin: 1.2em 0px;"><code style="font-family: Consolas, Inconsolata, Courier, monospace;margin: 0px 0.15em; padding: 0px 0.3em; white-space: pre-wrap; font-weight: 550; background-color: rgba(119, 119, 119, 0.3); border-radius: 3px; display: inline;white-space: pre; overflow: auto; border-radius: 3px; border: 1px solid rgb(204, 204, 204); padding: 0.5em 0.7em; display: block !important;">$ pdftex --version
pdfTeX 3.141592653-2.6-1.40.22 (TeX Live 2021)
kpathsea version 6.3.3
Copyright 2021 Han The Thanh (pdfTeX) et al.
There is NO warranty. Redistribution of this software is
covered by the terms of both the pdfTeX copyright and
the Lesser GNU General Public License.
For more information about these matters, see the file
named COPYING and the pdfTeX source.
Primary author of pdfTeX: Han The Thanh (pdfTeX) et al.
Compiled with libpng 1.6.37; using libpng 1.6.37
Compiled with zlib 1.2.11; using zlib 1.2.11
</code></pre>
<p style="margin: 0px 0px 1.2em !important;">I compiled my code,
and then i called exiftools on the result. Here is the output:</p>
<pre style="font-family: Consolas, Inconsolata, Courier, monospace;font-size: 1em; line-height: 1.2em;margin: 1.2em 0px;"><code style="font-family: Consolas, Inconsolata, Courier, monospace;margin: 0px 0.15em; padding: 0px 0.3em; white-space: pre-wrap; font-weight: 550; background-color: rgba(119, 119, 119, 0.3); border-radius: 3px; display: inline;white-space: pre; overflow: auto; border-radius: 3px; border: 1px solid rgb(204, 204, 204); padding: 0.5em 0.7em; display: block !important;">$ exiftool -All -a test.pdf
ExifTool Version Number : 12.30
File Name : test.pdf
Directory : .
File Size : 21 KiB
File Modification Date/Time : 2022:01:30 05:49:44+01:00
File Access Date/Time : 2022:01:30 05:49:44+01:00
File Inode Change Date/Time : 2022:01:30 05:49:44+01:00
File Permissions : -rw-r--r--
File Type : PDF
File Type Extension : pdf
MIME Type : application/pdf
PDF Version : 1.5
Linearized : No
Page Count : 1
Producer : pdfTeX-1.40.22
Creator : TeX
Create Date : 2022:01:30 05:49:44+01:00
Modify Date : 2022:01:30 05:49:44+01:00
Trapped : False
</code></pre>
<p style="margin: 0px 0px 1.2em !important;">We have the producer,
the creator, the modified date, the creation date and also
trapped.</p>
<p style="margin: 0px 0px 1.2em !important;">My understanding is
that the number 15 (=1+2+4+8) would set all the bits.</p>
<p style="margin: 0px 0px 1.2em !important;">Am I doing something
wrong?</p>
<div
title="MDH:PHA+VGhlIFtDaGFuZ2VMb2cgb2YgcGRmdGV4XShodHRwczovL3d3dy50dWcub3JnL2FwcGxpY2F0aW9ucy9wZGZ0ZXgvTkVXUyksIHdoZW4gZW51bWVyYXRpbmcgdGhlIGNoYW5nZXMgaW4gYHBkZlRl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"
aria-hidden="true"
style="height:0;width:0;max-height:0;max-width:0;overflow:hidden;font-size:0;padding:0;margin:0;"></div>
</div>
</body>
</html>