Move & Draw

    forward()
    backward() | bk() | back()
    right() | rt()
    left() | lt()
    goto() | setpos() | setposition()
    setx()
    setx()
    setheading() | seth()
    home()
    circle()
    dot()
    stamp()
    clearstamp()
    clearstamps()
    undo()
    speed()