Press 1 to place wall, 2 to place window, 3 to place floor, 4 to place table, 5 to place door. Press 0 to erase. Click Clear to erase everything. Press M to scan your build, a list will pop up. Double click on the numbers to select them. Now, If you use Windows OS: ctrl + c to copy. ctrl + v to paste If you use Mac OS X: CMD + c to copy. CMD + V to paste. Now if you want to continue on a build click Import and Paste your code and press enter. If You are needing help with this comment below! :)