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revision 1.120 by tjl, Sat Feb 15 09:18:20 2003 UTC revision 1.121 by benja, Sat Feb 15 09:35:37 2003 UTC
# Line 114  of some recent hypertext and graphics ar Line 114  of some recent hypertext and graphics ar
114  Introduction  Introduction
115  ============  ============
116    
117  In several hypertext systems today, following a link means a disruptive change  In several hypertext systems today, following a link means a *disruptive* change
118  in the user's workflow, replacing the current context with an  in the user's workflow, replacing the current context (e.g., Web page) with an
119  entirely different one.  entirely different one. A focus+context view [XXX] of bidirectional links
120  The reason for this is that most systems still use the paradigm  can provide a *gradual* change by showing fragments of link targets
121  (developed in 70s at Xerox PARC [XXXref]) of  before a link is followed, and fragments of link sources after
122  overlapping, rectangular, *independent* viewports to paper-like documents ---  the link has been followed (if links are bidirectional).
123  A link operation can only create a new window or switch the contents of an  
124  existing window.  This is diffucult to realize in the dominant graphical user interface paradigm
125    (developed in the 70s at Xerox PARC [XXX ref]) in which *pages*
126    are shown in overlapping, rectangular, unconnected viewports (windows).
127    In this paradigm, following a link can only create a new window
128    or replace the contents of the current window.
129    
130  Alternatives, such as replacing part of text (XXX antont's reference),  Alternatives, such as replacing part of text (XXX antont's reference),
131  are not very popular nor intuitive... [XXXref]  are not very popular nor intuitive... [XXXref]
132  Improving user orientation through user interface improvements has  Improving user orientation through user interface improvements has

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