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Erase All Keyword

<EraseAll>
<e>
<ea>

    E switch alternative. Provided only as a last resort if the display engine gets broken somehow and leaves pixels on the screen. This has a double penalty, not only is the frame that this occurs in the full size of the screen, when it is processed (in the drawing phase) all screen buffers are cleared (if you've got 4 megs of video memory this can take a few hundred milliseconds).




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