This document discusses multimedia and interactivity. It defines multimedia as the combined use of several media like sound and video in computer applications. It then lists and describes the common multimedia elements: text, graphics, animations, audio/sound, and video. It states that these elements are used to effectively communicate and enhance website design and interactivity. The document also defines interactivity as the communication between the user and computer software. It notes that online games are a common form of interactivity that require continuous interaction between the player and machine.