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%\providecommand{\pdfxopt}{x-1a,allxmp,mathxmp}
\providecommand{\pdfxopt}{a-1b,allxmp,mathxmp}
%\providecommand{\pdfxopt}{e-1,allxmp,mathxmp}
%\providecommand{\pdfxopt}{a-1b,ua-1,allxmp,mathxmp}
% XMP Metadata first
\begin{filecontents*}{\jobname.xmpdata}
\Title{Unicode: U₄(ℤ[1/√2, i]). —
ASCII: !"'()*+,-./:;<=>?@[]`|#$&~^_.
Four escaped symbols: \% \backslash\ \{ \}.
}
\Author[de-AT]{Gödel\sep[fr]Escher\sep[de]
ÅąŅƅDžȅɅ
Dž
Bach\sep[en-US]
U₄(ℤ[1/√2, i]), !"'()*+,-./:;<=>?@[]`|#$&~^_, \% \backslash\ \{ \}}
\Subject{This is the abstract. It's about ℤ[1/√2, i] and other rings. \mathbf{A\,+\,B \;=\; C*D/\alpha_{i}^{34}\beta}}
\Keywords{the group U₄\sep and other stuff\sep Some
symbols: & # < > \copyright\ 2014\sp{20125621} }
\Language{en-GB\sep en-US}
\Copyright{Copyright \copyright\ 2014 \textLF The artist <currently> known as Ƭ̵̬}
\CopyrightURL{http://www.mathstat.dal.ca/~selinger/copyright.html}
\Creator{LaTeX + pdfx.sty with \pdfxopt\space option}
\Source{\jobname.tex}
\Coverage{PDF standards: PDF/A and PDF/X}
\Relation{PDF/A\sep PDF/X\sep PDF/UA\sep PDF 2.0}
\Contributor{\TeX\space Users Group}
\PublicationType[en-US]{pamphlet}
\Date{2018-12-25}
\Date{2019-01-01}
\Date{2019-04-07}
\Date{2019-11-08}
\Date{2019-12-21}
\Journaltitle{abc \textLF \S \ddag \dots ÀÁÂÃÄ
%ÅąŅƅDžȅɅ % A0 = 10100000
ÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÛÜÝß
%Ņ
%àĠŠƠǠȠ † % 85 = 10001010
%⅀⅁⅒⅕⅘
% ⠱ ⠲ ⠵ ⠷
áâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿ\P }
% \dag \ddag \dots \S \P }
% \textLF \(\mathbf{A}+\mathcal{B} = \mathfrak{C}*\mathsf{D}/\vec{\mathsfbf{E}}\widetilde{ab}\)}
\end{filecontents*}
%
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\usepackage[OT1,T1]{fontenc}
\usepackage{textcomp,ptmxcomp,tipa,extraipa}
\listfiles
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\begin{document}
\noindent
In this example, only the metadata matters;
apart from checking accents: {\`a \'e \"u}
and whether other characters still work consistently:
\dag \ddag \dots \S \P \$
$\bullet\dots \dag\ddag $
\end{document}
Memory usage before: 692&171340; after: 203&171195; still untouched: 4812814
mathxmp
Memory usage before: 692&183143; after: 203&182998; still untouched: 4800985
allxmp
Memory usage before: 692&189509; after: 203&189364; still untouched: 4794613
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