The Electronic Document System (EDS) - also known as the 'Document Presentation System' - was an early hypertext system focused on creation of interactive documents such as equipment repair manuals or computer-aided instruction texts with embedded links and graphics. EDS was created as 1978-1981 research project at Brown University by Steven Feiner, Sandor Nagy and Andries van Dam. Brown University is a highly esteemed private University located in Providence, Rhode Island and is a member of the Ivy League. Andries "Andy" van Dam (born 8 December 1938, Groningen) is a Dutch -born American professor of Computer science and former
EDS used a dedicated RAMTech raster display and VAX-11/780 computer to create and navigate a network of graphic pages containing interactive graphic buttons. Graphic buttons had programed behaviors such as invoking an animation, linking to another page, or exposing an addition level of detail.
The system had three automatically created navigation aids: 1) a timeline showing thumbnail images of pages traversed; 2) a 'neighbors' display showing thumbnails of all pages linking to the current page on the left, and all pages reachable from the current page on the right; 3) a visual display of thumbnail page images arranged by page keyword, color coded by chapter.
Unlike most hypertext systems, EDS incorporated state variables associated with each page. For example, clicking a button indicating a particular hardware fault might set a state variable that would expose a new set of buttons with links to a relevant choice of diagnostic pages. The EDS model prefigured graphic hypertext systems such as Apple's HyperCard. HyperCard was an Application program created by Bill Atkinson for Apple Computer Inc
References
- van Dam, Andries. (1988, July). Year 1988 ( MCMLXXXVIII) was a Leap year starting on Friday (link displays 1988 Gregorian calendar) Hypertext '87 keynote address. Communications of the ACM, 31, 887–895. Communications of the ACM ( CACM) is the flagship monthly Journal of the Association for Computing Machinery (ACM
- Feiner, Steven; Nagy, Sandor; van Dam, Andries. (1981). An integrated system for creating and presenting complex computer-based documents. SIGGRAPH Proceedings of the 8th annual conference on Computer graphics and interactive techniques, Dallas Texas.
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