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Hi Bruno,
<div class=""><br class="">
<blockquote type="cite" class="">On 5 Apr 2017, at 17:15, Bruno Voisin <<a href="mailto:bvoisin@icloud.com" class="">bvoisin@icloud.com</a>> wrote:<br class="">
<br class="">
<blockquote type="cite" class="">Le 5 avr. 2017 à 02:28, Ross Moore <<a href="mailto:ross.moore@mq.edu.au" class="">ross.moore@mq.edu.au</a>> a écrit :<br class="">
<br class="">
The metadata does not report this file as having been created by TeX software.<br class="">
Maybe it has undergone some post-processing, resulting in Metadata<br class="">
being lost or suppressed.<br class="">
<br class="">
My conclusion: not an issue regarding LaTeX production of PDFs.<br class="">
</blockquote>
<br class="">
Hi Ross,<br class="">
<br class="">
TeX must have been involved in some way, as the fonts include RMTMI and MTEX, which are MathTime 1.1 fonts, and CMEX10.<br class="">
<br class="">
The other fonts are Helvetica and Palatino-{Roman,Italic,Bold}, in Type 1 format. The names show it wasn't standard TeX-Live-style TeX (otherwise the URW clones would be used), or if so then some post-processing involving font substitution was performed.<br class="">
<br class="">
The names (Helvetica, Palatino) are those of the Mac fonts, so maybe it was Textures.<br class="">
</blockquote>
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</div>
<div class="">But surely Textures would have left its signature in the Metadata.</div>
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</div>
<div class="">Not sure about very old TeX methods, but these days using pdftex, hyperref and other engines,</div>
<div class="">there is certainly metadata included.</div>
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</div>
<div class="">Something else may have acted after TeX had finished building this PDF.</div>
<div class="">What that was? Who knows.</div>
<br class="">
<blockquote type="cite" class=""><br class="">
The file is from the book Abel's Proof by Peter Pesic, from 2003, so the production process must relate to the TeX of that time:<br class="">
<br class="">
<a href="http://www.jstor.org/stable/j.ctt1dnnc74" class="">http://www.jstor.org/stable/j.ctt1dnnc74</a><br class="">
http://www.peterpesic.com/abels-proof/<br class="">
</blockquote>
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</div>
<div class="">Something has placed an annotation across the whole front page, with FitH property.</div>
<div class="">This may have been a way to try to get the document to open as "fitting to screen”.</div>
<div class=""><br class="">
</div>
<div class="">These days you just declare an “Open Action” to achieve this, using hyperref.</div>
<div class="">(indeed it may even be the default for hyperref, so you don’t know that you are actually doing it.)</div>
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</div>
<div class="">The result is that the actual annotation no longer satisfies the PDF specifications,</div>
<div class="">if it ever did. My guess is that it was always wrong, but never noticed because </div>
<div class="">people tend not to check specifications, only how a PDF actually looks.</div>
<div class=""><br class="">
</div>
<div class=""> "There are lots of bad PDFs out there” — Adobe software engineer.</div>
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</div>
<div class=""><br class="">
</div>
<br class="">
<blockquote type="cite" class=""><br class="">
Bruno<br class="">
</blockquote>
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</div>
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</div>
Cheers</div>
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</div>
<div class=""><span class="Apple-tab-span" style="white-space:pre"></span>Ross<br class="">
<br class="">
<div class=""><br class="">
Dr Ross Moore<br class="">
Mathematics Dept | 12 Wally’s Walk, 734<br class="">
Macquarie University, NSW 2109, Australia<br class="">
T: +61 2 9850 8955 | F: +61 2 9850 8114<br class="">
M:+61 407 288 255 | E: <a href="mailto:ross.moore@mq.edu.au" class="">ross.moore@mq.edu.au</a><br class="">
<br class="">
http://www.maths.mq.edu.au<br class="">
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