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| | IBIS |
 | | This software divides the display into four fixed windows, simultaneously displaying a map (global and local), index, node contents, and control panel (256). |
 | | gIBIS is a sophisticated environment which includes clusters (here called subnets), context-sensitive menus, multiple indexes (subject, author, keyword, title), user configurations, link filtering, simple queries, multi-user access, and pointers to external objects. |
 | | The authors have noted some difficulties with this system, most notably the problem of cognitive overhead engendered by the high degree of structure. |
| www3.iath.virginia.edu /elab/hfl0104.html (258 words) |
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