mmark 2.2.25+dfsg1-2build1 (arm64 binary) in ubuntu mantic

 Mmark is a powerful markdown processor written in Go, geared towards
 writing IETF documents. It is, however, *also* suited for writing
 complete books and other technical documentation, like the Learning Go
 book (https://miek.nl/go), Internet-Draft text output
 (https://miek.nl/go/learninggo-2.txt)) and RFCs.
 .
 It provides an advanced markdown dialect that processes file(s) to
 produce internet-drafts in XML RFC 7991 format. Mmark can produce
 xml2rfc (aforementioned RFC 7991), HTML5 output, and manual pages.
 .
 Mmark uses gomarkdown (https://github.com/gomarkdown/markdown) which is
 a fork of blackfriday (https://github.com/russross/blackfriday/).
 .
 This package provides the /usr/bin/mmark executable binary and documentation.