You can use Mediawiki syntax. It is possible that not all formatting options are supported at the moment.Links to other pages: [[Page Title]] or [[path/to/page|Title]].External links: http://example.com or [http://example.com some link title].Interwiki links: [[site:Page Title]].You can use the following interwiki links: path, gdo, wpImages are included with [[Image:name]]. (wikipedia help)
Links to specified hosts will have a rel="nofollow" added to them.
More information about formatting options