MediaWiki:Flow-talk-page-beta-feature-description/en

Enables a new structured discussion system on user talk page. Flow simplifies talk page discussions with clear places to write and reply, and allows conversation-level notifications. Existing wikitext discussions are moved to an archive. This feature is not auto-enabled; users will have to enable it separately. Disabling this feature will move the Flow board to a subpage and un-archive the previous talkpage.