Remote controls use communication analogous to UDP, which means the zapper doesn't know the current state, but only that the button wants it to send the "toggle_on-off" message. And that's okay, but....
I would so want a TCP style interaction with "query_state", "query_input" and the like, to go along with not only "toggle_on-off" but "turn_on" and "turn_off" (which would not change the current state if the current state is desired) and "set_input( 'HDMI1' )" or "set_input( 'USB' )" or "set_screen_image('custom.jpg')".
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