It seems many people are unaware of this tip. Eagle does not have a button to allow you to fully unroute after you have routed your board. If you wanted to start routing again, this would be nice to have. Moreover, the following tip allows you to undo all your wire routing with one command.

As an example, lets take the Wiznet WizFi Wifi Booster Pack board:

Say, I want to unroute the whole thing in one go. Go to the command section in Eagle on the top left and enter – ripup; That is correct, pretty explicit 🙂

You should see the following:

How awesome is that! If you like this tip, say hello below or you could also share more tips.