Multipurpose Internet Mail Extensions (MIME) and Media Types 2015-10-22 2023-03-21 First Come First Served While documentation is required, any level of documentation is sufficient. Registrations can be updated with IETF Review. The variant names Standard, Common, and Markdown are reserved and cannot be registered. Original Markdown MultiMarkdown MultiMarkdown GFM GitHub Flavored Markdown pandoc Pandoc Fountain Fountain CommonMark CommonMark kramdown-rfc2629 Markdown for RFCs rfc7328 Pandoc2rfc Extra Markdown Extra SSW Markdown for SSW quarto Quarto myst MyST Markdown J.J. Allaire mailto:jj.allaire&gmail.com 2023-03-14 Paulina Ciupak mailto:polyna&posteo.net 2020-01-13 Rowan Cockett mailto:rowanc1&gmail.com 2023-03-21