Multimedia is a combination of different media types like text, audio, images, animations and video. It allows interactive delivery of information to users. The key elements of multimedia are text, audio, graphics, video and animations. Multimedia can be linear, with no user control, or non-linear with user navigation. Authoring tools are used to combine different media elements. Multimedia has various applications in business, education, entertainment and more. Common multimedia products include briefing products, reference products, databases, education/training products, kiosks and games.