CommonMark

mkbook nominally utilizes CommonMark with some GFM extensions through the use of the comrak crate. In using comrak, a specific set of options are used, which are listed here:

let options: ComrakOptions = ComrakOptions {
    hardbreaks: false,
    smart: true,
    github_pre_lang: false,
    default_info_string: None,
    unsafe_: true,
    ext_strikethrough: true,
    ext_tagfilter: false,
    ext_table: true,
    ext_autolink: true,
    ext_tasklist: true,
    ext_superscript: true,
    ext_header_ids: Some("header".to_owned()),
    ext_footnotes: true,
    ext_description_lists: true,
    ..ComrakOptions::default()
};

Mostly, know that the following extensions are enabled:

• Strikethrough
• Tables
• Autolinks
• Task Lists
• Superscripts (e = mc^2^. → e = mc<sup>2</sup>.)
• Description Lists:

  First term
  
  : Details for the **first term**
  
  Second term
  
  : Details for the **second term**
  
      More details in second paragraph.