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    Re: Erasing E6-B and Polhemus Plots
    From: Paul Hirose
    Date: 2018 Mar 10, 11:45 -0800

    The manual for my CR computer says, "A little vaseline wiped over the
    transparent wind disk not only makes it more transparent, it also makes
    it easier to wipe off pencil dots. Pencil will go on just as easy. It
    will not work for a pen, however."
    I have no Vaseline at hand, so have not tried that. To remove a mark on
    the wind disk I get most of it with the eraser, then lick my thumb and
    rub the spot. That also works on grease pencil marks.

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