right click to change to the hand cursor (not a arrow)
Also the wiki is kind of out of date (Well, REALLY out of date) and we're currently using the Fallout 3 and New Vegas method of repair. repairing items with a duplicate of the item you want to repair. Just Putting this up here incase anyone else is wondering, like me, using repair with the armor, and having, say, fibers or metal parts in my inventory instead of another leather armor or metal armor.