The page says: "This extension comes with MediaWiki 1.21 and above".
Does this mean that I can use the <syntaxhighlight> tag in something that another extension outputs and be sure that it will work?
The page says: "This extension comes with MediaWiki 1.21 and above".
Does this mean that I can use the <syntaxhighlight> tag in something that another extension outputs and be sure that it will work?
Unfortunately, no. It just means that this extension is included in the Bundled extensions and skins tarball bundle. It still needs to be enabled in a wiki deployment's LocalSettings to be usable.