The document discusses animation and its various types and techniques. It defines animation as the generation and display of a sequence of images to create an illusion of movement similar to movies. The key types are 2D animation using bitmap or vector graphics and 3D animation using digital modeling. The basic rules of animation are squash and stretch, slow in/out, and maintaining 3D effects. Computer animation is created digitally on a computer through techniques like object definition, path specification, key frames, and in-betweening.