 one individual needs to run the application for everyone in the session to share it. After that one person launches the application (given that the application sharing session is already in progress), all conferees can both see a shared document and can make changes to it. Different products offer different ways of characterizing who is making what changes. Some identify users with colored fonts, others append names or initials, but nearly all allow changes to be made only after the initiator transfers control. Application Sharing differs from shared whiteboard in that the purpose of the former is to share an additional application to view or change a document, whereas the purpose of the latter is to capture rough notes and illustrations. Put differently, document creation and refinement is the objective in applications sharing; brainstorming and idea Video Communications: The Whole Picture capture is generally the focus of shared whiteboard applications. File transfer is also an applications sharing feature. Most products also offer chat tools for communicating via simple text messages, post comments to a conversation, or record meeting notes and action items as part of a collaborative process. Interactive Multimedia/Video Servers Most interactive multimedia products support desktop-based just-in-time training. Some allow interaction with the compressed audiovisual stream. Others deliver a one-way-only stream of compressed digital video. Products in this class can take the form of audiovisual enhancements to Web-based applications. Interactive multimedia products typically compress the content using MPEG techniques. Stored material is available on-demand across a LAN or WAN. Interactive multimedia/video server products can be point-to-point or multipoint. They can be applied as integrated distance learning, performance support, and information management systems. Instructors often use such products in course preparation and information presentation. Video Feeds Video feeds enable individuals to use PCs (and, in