Extension:Expiry/de-formal

Expiry allows to set an expiration date for a wiki page. Optionally, a watermark can be shown starting at the expiration date.

Usage / features
Expiry marks — after a certain period of time — a chosen article as "obsolete". The article can be updated by editing or by confirming that the article is still up-to-date.

Expiry is the ideal basis for an archiving system. Outdated articles can be moved to an archive after being queried. Expiry can be set on any content page of the wiki. In conjunction with expiring a page, a user can also set a reminder for this page.