This document discusses various interactive features that can be included on web pages, including audio, video, graphics, links, and page navigation. Audio allows users to listen to sound and find information easier than reading text. Video provides visual information but can be of poor quality depending on the connection. Graphics add color and images to provide context. Links allow quick navigation between pages. Page navigation gives users control over their viewing experience. The document argues that combining these different interactive elements can provide the best experience, as audio and video together allow users to understand information more fully than either alone.