Shapes in OmniGraffle comes in many forms.
You have rectangles, circles, squashed rectangles, diamonds, hexagons, octagons, triangles, arrows, double arrows, wedges that looks like PacMan stars, houses, puzzle pieces, cylinders, clouds, speech bubbles, lightning bolts, patches, hearts, and so on. These shapes are called compound shapes.
The American Heritage ® Dictionary of the English language, fourth edition defines a compound to be a combination of two or more elements or parts. We are missing one type of shape, and that is the line. Line shapes are called singular shapes.
The second shape type missing ...