My favorite: poweroutlet.type.f.square.fill

other options:

• poweroutlet.type.b: maybe too much of a ghost
• 01.square: because binary
• square.and.at.rectangle: looks a bit like a drunk robot

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Yes, please! My Apollo muscle memory keeps fooling me. Now that you implemented the forward jump my naive guess is that backwards is basically free. Thanks OP for your hard work!