What makes up LuaTeXhttp://www.luatex.org//languages.html
manual as ultimate reference available for everyone.
Sartor Resartus | Project Gutenberghttps://www.gutenberg.org/cache/epub/1051/pg1051-images.html
kind; sometimes, with reference to his great historic and statistic knowledge, and the vivid way he had of expressing himself like an eye-witness of distant transactions and scene
https://www.ietf.org/rfc/rfc6763.txthttps://www.ietf.org/rfc/rfc6763.txt
18. References ....................................................33 18.1. Normative References .....................................33 18.2. Informative References .............
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