Web apps are dynamic media under the
They can be that way when we're developing and presenting, too.
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Squeak's GUI, Morphic, can draw all its windows together on a single canvas, or each window on its own canvas. The first slide now contains an example of this.
There's also a standalone JS implementation of Morphic, MorphicJS, from UC Berkeley's Snap project.
We can use MorphicJS for Squeak windows, each in its own HTML5 canvas, while Squeak itself runs as a headless backend service.