Use < and > to switch item (left and right arrow keys). Click to build. Press space to show/hide fairings. One of the items lets you erase.
Please don't advertise. Thank you. (There are plenty of advertising studios where you can.) P. S. you *cannot* fly your rocket, sadly. (And I don't think I have the capability to make it possible—I'm sorry.) To be honest, this "game" is not very great...
