This is pdfTeX, Version 3.14159265-2.6-1.40.21 (TeX Live 2020) (preloaded format=pdflatex 2020.4.7)  1 MAR 2021 08:53
entering extended mode
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**header.tex
(/usr/local/texlive/2020/texmf-dist/tex/latex/tools/x.tex
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