/usr/share/doc/libjs-mathjax-doc/html/_sources/advanced/ is in libjs-mathjax-doc 2.7+20171212-1.
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/usr/share/doc/libjs-mathjax-doc/html/_sources/advanced/callbacks.rst.txt
/usr/share/doc/libjs-mathjax-doc/html/_sources/advanced/debugging-tips.rst.txt
/usr/share/doc/libjs-mathjax-doc/html/_sources/advanced/dynamic.rst.txt
/usr/share/doc/libjs-mathjax-doc/html/_sources/advanced/extension-writing.rst.txt
/usr/share/doc/libjs-mathjax-doc/html/_sources/advanced/mathjax-node.rst.txt
/usr/share/doc/libjs-mathjax-doc/html/_sources/advanced/model.rst.txt
/usr/share/doc/libjs-mathjax-doc/html/_sources/advanced/queues.rst.txt
/usr/share/doc/libjs-mathjax-doc/html/_sources/advanced/signals.rst.txt
/usr/share/doc/libjs-mathjax-doc/html/_sources/advanced/startup.rst.txt
/usr/share/doc/libjs-mathjax-doc/html/_sources/advanced/synchronize.rst.txt
/usr/share/doc/libjs-mathjax-doc/html/_sources/advanced/toMathML.rst.txt
/usr/share/doc/libjs-mathjax-doc/html/_sources/advanced/typeset.rst.txt