Apple CEO Steve Job’s other company, Pixar, has developed an in-house animation tool for Mac OS X.

Jobs is also CEO of Pixar, which developed its new Review Sketch tool for use in making The Incredibles, reports Millimeter Magazine.

The tool allows animators to draw on top of a projected image using a digitizing pen - effectively tracing the projected image digitally. The software uses a Wacom Cintiq tablet as an input device.

Review Sketch was primarily developed to let movie director Brad Bird “draw on an image, and then play it back with the image moving underneath his drawing,” the report explains.