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From: "Paul Prescod" <paul@prescod.net>
> Visualization tools are fine, but they should be visualizing the true
> abstractions in the language you are "editing", not trying to hide them
> from you with some thin, proprietary, quasi-abstraction layer.
Schneiderman's Direct Manipulation interface apparantly recommends
* continuous representation of the objects and actions of interest
* physical actions instead of complex syntax
* immediate and continuous feedback
I think there has been a general confusion that "physical actions
instead of complex syntax" somehow means "hiding the tags more"
rather than "using the mouse more" (to put it a little simply.)
Putting cost aside, one benefit of direct manipulation interfaces
is in presenting information in views that allow better physical
manipulation.
Cheers
Rick Jelliffe
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