Site notice

MediaWiki:Sitenotice is displayed above the page title for all users, unless it is superseded by another notice.

The message is displayed if it is defined, that means the sitenotice page is not empty and its contents is different from the single character "-".

Which notice is displayed for a user is decided in this order:

1. If the CentralNotice extension is enabled, it is displayed (even if not defined); see below.
2. If the user is anonymous, MediaWiki:Anonnotice is displayed (if defined).
3. Otherwise, MediaWiki:Sitenotice is displayed (if defined).
4. Otherwise, the global notice in $wgSiteNotice is displayed (if defined).
5. Otherwise, no notice is displayed.