Each colored bar represents how much a particular participant can see, as well as the overlap between views, if any. Synchronized scrolling, on the other hand, automatically aligns viewports. Hand gestures play an important role in any work surface activity, and presentations are no exception. This means that the pointer will always be over the same text on all displays. Attaching group annotations to pages While the original web document is not editable, people can attach shared annotations to any page.
Users can enter and edit text at any time, which is displayed on all screens.
As well, the annotation is automatically keyed to the current web page. Changing to a new page clears the editor, while returning to an annotated page restores the text annotation in the editor. We have described a system called GroupWeb which leverages the ubiquity of the Web by adding features found in real-time groupware systems. This combination can yield a powerful presentation tool that could be used for many purposes, including distance education, distributed meetings, and small group collaboration. Groupware browsers, however, will have to evolve along with the capabilities of Web pages.