In the source he says its command-click: * - see if we can do anything to one-button-ise the multi-button * dependent puzzle UIs: * - Pattern is a _l

In the source he says its command-click: * - see if we can do anything to one-button-ise the multi-button * dependent puzzle UIs: * - Pattern is a _little_ unwieldy but not too bad (since * generally you never need the middle button unless you've * made a mistake, so it's just click versus command-click).