<tag>...</tag>
p or pair – (default) display a matched pair of open-and-close tags: <font>...</font>
o or open – display only the opening tag of an open-and-close pair: <span>
c or close – display only the closing tag of an open-and-close pair: </span>
s or single – display a single tag: <br />
{{tag|ref}} → <ref>...</ref>
{{tag|ref|content=hello}} → <ref>hello</ref>
{{tag|font|content=foo}} → <font>foo</font>
{{tag|font|open}} → <font>
{{tag|font|open|content=hello}} → <font>hello
{{tag|span|close|content=hello}} → hello</span>
{{tag|span|pair|content=hello}} → <span>hello</span>
{{tag|ref|open|params=group=note}} → <ref group=note>
{{tag|references|single}} → <references />
{{tag|br|single}} → <br />