Github CommonMark Extensions
The Github fork of cmark supports several markdown extensions which provide features which are not (yet) in the official commonmark spec.
list_extensions()
Currently the following extensions are supported:
table support rendering of tables
strikethrough via ~sometext~ syntax
autolink automatically turn URLs into hyperlinks
tagfilter blacklist html tags: title textarea style xmp iframe
noembed noframes script plaintext.
See also the spec for GitHub Flavored Markdown.
print(list_extensions())
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.