| Extensions are of four types: | |
| * Core: they come with Mediawiki core and are updated with it | |
| * Contrib, available through ExtensionDistributor [1]: updated manually when Mediawiki is updated | |
| * Contrib, not available through ExtensionDistributor: not updated, stored in SVN for convenience | |
| * Custom: GoogleCoop and OOoIDLtags, stored in SVN | |
| [1] https://www.mediawiki.org/wiki/Special:ExtensionDistributor | |