post/page versions

i’ve googled and searched through the plugins and forums here… can’t find anything regarding a way to save versions of content in wordpress. is there a way to save content in pages/posts so every time you hit “save” it creates a new copy of the content somewhere?

i’ve had a few clients complain that they’ve accidentally deleted copy and want it back. i know there are whole-WP backup plugins out there, but i was just wondering if there’s a way to save content (expression engine does this) so that users can go and find old copies of pages/posts and grab content from them.

anyone?