Space -- change modes (Place, Examine, Wire) Up arrow -- show log Down arrow -- hide log Right arrow -- change gate (AND, OR, XOR, NAND, NOR, XNOR, NOT) IN PLACE: Click to place gates. Click on top of an existing gate to replace it. IN EXAMINE: Click on a gate to examine it. IN WIRE: Hover over a gate to see which port of the gate you want to wire to/from, then click on the ports to connect them. Do not connect ports to themselves.
Sorry for the poor resolution, not sure what's up with the graphics on Scratch 2.0 but I wish they didn't anti-alias so much or whatever is causing this. There's still more that has to be done, such as being able to delete ports, edit their names, types, expression, remove and add them from the stack.
