That's the controlling element here, and I think that's unfortunate.

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Each mirror acts as a beam-steering device, controlling whether a single picture element (pixel) in the image is light or dark.

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Keynote scores for the ease of its drag-and-drop assembly and its context-sensitive Inspector tool, which will be familiar to users of design products from Adobe (nasdaq: ADBE - news - people ) for controlling the attributes of each element.

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