This is a test of commonsense. Complete the next sentence:

How to revert an edit on a wikia wiki 
Click on an article which has been affected by a destructive edit. 
On the right of the article's title, you will see the edit box. 
Click on the arrow on the right of the edit box and click' history' in the drop-down menu.
You will now have accessed the article's history, which is a list of all of the article's edits. Click the word' undo' next to the bad edit.