https://manpages.ubuntu.com/manpages/questing/man3/LaTeXML%3A%3ACore%3A%3ADefinition%3A%3ARegister.3pm.html
Ubuntu Manpage: "LaTeXML::Core::Definition::Register" - Control sequence definitions for Registers.
Control sequence definitions for Registers.
ubuntumanpagelatexmlcoredefinition
https://experts.mcmaster.ca/scholarly-works/1407270
The LaTeXML Daemon: Editable Math on the...
Learn about the scholarly work entitled The LaTeXML Daemon: Editable Math on the...
latexmldaemoneditablemath