I'm trying to transclude a section in a given
document, with something like
{{:Article#SectionA}}
However, I get the entire contents of Article, not just SectionA. Am I
missing something? I'm running MediaWiki 1.8.2.
If that's the only section you want to transclude (ie. the other
sections aren't transcluded elsewhere) then you should be able to get
what you want by putting <onlyinclude></onlyinclude> around that
section (or possibly includeonly... I might be remembering them the
wrong way around).