`  ==How to revert vandalism== I've left a warning on that user's page, and fixed a couple of remaining problems from their edits. Thanks for the heads-up. If ever you come across vandalism or a particularly poor edit to an article, it's very easy to revert it. Click on the history tab at the top, choose the version of the article you want to go back to (by clicking on its date/time link) and then, with the prior version of the article on your screen, click on the ``edit this page`` tab. An edit window will come up like normal, with a big red warning at the top telling you that you're editing an old version of the article, and any changes made since that version will be discarded. Put an explanation in the edit summary and hit ``Save page``. Easy as that.  One thing to be careful with if you are reverting bad edits, is making sure you go back far enough to get rid of all of it, because if other editors see that someone's reverted some vandalism they often don't check carefully to see if it's all gone, and the remaining bits can stay in the article unnoticed for a long time.  Anyway, that's one more weapon to your arsenal. No-one enjoys cleaning up vandalism, but at least they've made it easy to do... Cheers,  `