WASD or arrow keys 0 to turn on the panel (makes you fast and can phase through things) If cursor is on the panel use arrow keys to move the one you want to build press E to copy the block selected if panel is on or if you press on the grass with nothing on it you can erase stuff If you touch the edge it'll just teleport to another clone of the previous area If panel is on use 1,2, and 3 keys to switch layers Layer 1 is when it goes to the back always Layer 2 is when it can go in front of objects Layer 3 is when its in front if you and the objects In the panel if you press P you can turn on collision hitboxes on everything If you hold 1 and press a dot you can add collision in that area and if you hold X you can remove a collision pin
By salty_ Sid Tutorial from @Griffpatch