XF 2.0 Rich Text Editor, multiple moderators, and locking

[MIT]

We're having an issue where multiple moderators may edit a post, but there seems to be no built-in checkout/checkin locking with the rich text editor, so it's all too easy for one person's edit to overwrite another's inadvertently, losing changes.

Is there any way to do this (as other types of systems, e.g. for newspapers, can do)?

Thanks