Here is the definition of stylus.<p>Stylus
noun, plural styli  [stahy-lahy] (Show IPA), styluses.<p>2) any of various pointed, pen-shaped instruments used in drawing, artwork, etc.<p>3) Computers. a pen-shaped device used on a display screen to input commands or handwritten text or drawings.
Compare joystick (def 2), mouse (def 4).<p>But yeah, lets not let the facts get in the way.