- Created a new markup element, $subsections, which is a plural variant
of $subsection. The advantage is that it automatically inserts a
blank line after the final subsection which makes help articles
considerably easier to read.
- Consolidated the implementation of $link, $long-link and $pretty-link
- Moved $definition-icons from definition.icons to help.markup
- Moved $pretty-link from help.vocabs to help.markup