Thanks - I guess I had anticipated this problem in that I am asking
instructors to leave the original power point slide show uploaded and
offer alternative viewing methods. I agree that we need to address
accessibility issues which in my view can only be realised by offering
different alternatives to users (unless we are going to reduce the web to
a plain text experience) the instructions to access these files could be
made accessible so that students could use the right one. Quite how we
deal with accessibility for someone needing to use a screen reader with an
old netscape browser is a little beyond my imagination though!
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