Save Codes go here: https://scratch.mit.edu/discuss/topic/498722/ Press 0 to enter editor mode. Pressing keys 1-4 while in editor mode allows you to chose a block to place. Click to Place. Press e while hovering over a block to switch to it. Pressing L while in the editor will allow you to switch to another level you have saved (it will create a copy of the current level). Pressing R while in the editor will allow you to reset the current level and set the height and width of it (leave the value blank to keep the current value). Pressing C gives you a savecode to share with others. Pressing O allows you to open a level with a level code. Note:? blocks don't yet work.