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web/foocanvas/index.shtml

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-<h1>FooCanvas</h1>
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-<P>ZMap uses the Open Source FooCanvas widget for its display of sequence/annotation
-data. This widget offers considerable performance advantages over the Gnome Canvas
-which, while more sophisticated, was too slow and memory intensive for this project.
-The FooCanvas is essentially a port of the popular Tk canvas widget and has been used
-in a number of Open Source projects such as Gnumeric and Nautilus, i.e. it has a good
-pedigree.
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-<P>Early tests showed that it was as fast as the acedb Graph package in drawing and
-<b>much</b> faster for zooming and scrolling. It also has a number of other advantages
-to do with event handling and grouping of objects.
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-<p>
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