How to revert an edit

[Michael Hughes]

On Wed, Dec 1, 2010 at 12:40 PM, Zach Kriesse <zkriesse at ubuntu.com> wrote:
> Only Ubuntu Wiki/Doc Admins can revert, rename, delete pages on the Ubuntu
> community docs. As I'm one of those I'll take care of it..just shoot me the
> info.

Other community-managed documentation sites / wikis allow users to
revert changes. It annoys me that Ubuntu community contributors are
unable to revert changes themselves. Was this done because it results
in a loss of data?