>The write-protect thumbwheel you refer to, should the white dot be showing =
>or not?

Debbie - With all modern media, a "void" in the sensing position indicates
         writing not allowed.  IBM cartridges have a thumbwheel which,
when turned, reveals a flat spot on the thumbwheel cylinder, which is that
void/depression indicating writing not allowed.  So, when you see the dot,
it means that the media is write-protected.  You want the thumbwheel
turned such that the dot is not showing.  Some cartridges show a padlock
instead of a dot, which is a great leap forward in human engineering.  ;-)
   Richard

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