{{!
string|null html-site-notice the contents of a banner defined in MediaWiki:Sitenotice.
Also used by CentralNotice to inject banners into Vector.
Indicator[] array-indicators wiki-defined badges such as "good article",
"featured article". An empty array if none are defined.
string html-headelement a string of attribute HTML that begins with `` and ends with
`` and contains `meta` tags and ResourceLoader internals.
string html-printtail HTML to render at the end of the page contained necessary script tags for
ResourceLoader terminated with `