History/Version caching

Hi there,

I’m fairly new to using Xwiki, but I’m liking the product very much so far!
My question is: How long does older history/versions of pages lie around. Does it have some kind of static month-cycle?

My concern is losing older attachments and such, if a sudden 60-day period has passed by.

How long does older history/versions of pages lie around.

Forever.

There is no automatic cleanup of history by default.

Perfect. However, if I wish some kind of cleanup.
Is there an official extension available for that?