# Reference ```namespaces basic.showNumber(0); input.onButtonPressed(Button.A, () => { }); music.playTone(0, 0); led.plot(0, 0); radio.sendNumber(0); game.addScore(1); images.createImage(` . . . . . . . . . . . . # . . . . . . . . . . . . `); pins.digitalReadPin(DigitalPin.P0); serial.writeNumber(0); control.inBackground(() => { }); ```