The masks were little more sophisticated than an old color slide used to project a picture on a screen.

FORBES: Trick of the Light

The drawing program lets users slide their mouse from left to right to alter the color, position and shape of objects.

FORBES: Forget Comp Sci 101: Learn To Code With A Click Of Your Mouse

Sometimes a solid color background with simple white text can make for a stronger design than a slide full of images and text.

FORBES: Presentation Cleanse