MultiMarkdown, or MMD, is a tool to help turn minimally marked-up plain text into well formatted documents, including HTML, PDF (by way of LaTeX), OPML, or OpenDocument. MMD is a superset of the Markdown syntax, originally created by John Gruber. It adds multiple syntax features (tables, footnotes, and citations, to name a few), in addition to the various output formats listed above (Markdown only creates HTML). Additionally, it builds in “smart” typography for various languages (proper left- and right-sided quotes, for example).

WWW: https://fletcherpenney.net/multimarkdown/
