:what: Field lists map field names to field bodies, like
       database records.  They are often part of an extension
       syntax.

:stange name: Content.

:name with \: inside: foo

:foo: Colons : inside:body

:how: The field marker is a colon, the field name, and a
      colon.

      The field body may contain one or more body elements,
      indented relative to the field marker.