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/* Handshake bitches! */while (handshake_rx != 'G') {			/* Recieve and send back */	handshake_rx = RS232_rx();	RS232_tx(handshake_rx + 1);		/* Wait until a G or F is recieved */	while (( (handshake_rx = RS232_rx) != 'G') || (handshake_rx != 'F')); }