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 |