I have a hard time keeping them straight. As I understand it
- Extension:ContentTranslation aids translation of _entire_ articles
between _separate wikis_ . If you don't visit Special:ContentTranslation
you don't notice its operation.
- Extension:Translate manages translation of article elements within a
_single multilingual wiki_ with its Special:Translate page. It also
presents available localizations of an article on that wiki with its
<languages> tag. Within a <languages> tag it supports <tvar|id> and
<!--T:NN--> to identify translatable elements (and confuse the average wiki
editor :-) ;) ).
(But then how does Extension:Translate work on TranslateWiki to translate
arbitrary messages strings of non-wiki projects?)
If I'm right,
https://www.mediawiki.org/wiki/Extension%3ATranslate doesn't
explain any of this. Can someone who knows Be Bold and update?
Thanks,
--
=S Page WMF Tech writer