GELLMU – LaTeX-like markup for writing XML documents

GELLMU is an acronym for “Gen­er­al­ized Ex­ten­si­ble LaTeX-Like MarkUp”. With GELLMU one may use LaTeX-like markup to write con­sciously for SGML doc­u­ment types such as HTML, DocBook, TEI, or GELLMU's own LaTeX-like doc­u­ment type ‘ar­ti­cle’.
The pack­age pro­vides a syn­tac­tic trans­la­tor, which is the project layer for all doc­u­ment types.
The ar­ti­cle doc­u­ment type is very much like LaTeX with a tightly en­forced syn­tax and vo­cab­u­lary. For ar­ti­cle, the pack­age pro­vides trans­la­tors to clas­sic HTML, reg­u­lar LaTeX and the XML form of HTML ex­tended by MathML (XHTML). The lat­ter form pro­vides op­ti­mal on­line con­tent that is ‘ac­ces­si­ble’ and in the au­thor's opin­ion su­pe­rior to PDF for web pre­sen­ta­tion.