USENIX Technical Program - Abstract - 7th Tcl/Tk Conference - February 2000 ## Supporting Information Awareness Using Animated Widgets D. Scott McCrickard, Q. Alex Zhao, Graphics, Visualization, and Usability Center and College of Computing, Georgia Institute of Technology ### Abstract This paper describes a Tcl/Tk widget set extension that supports three animated behaviors: fading, tickering, and rolling. This extension is targeted for use in information awareness applications that monitor and communicate constantly changing information. Described is the programming interface for the widgets as well as the design decisions made in creating them and programs that use them. Introduced in the description are two new techniques called automatic markups and history-based shadowing, highlighting techniques used to identify and communicate the nature of the changes. USENIX Members may view the full text of this paper in HTML form, PDF form, and PostScript form. If you need the latest Adobe Acrobat Reader, you can download it from Adobe's site. To become a USENIX Member, please see our Membership Information. Current USENIX Members may change their password.

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