My memory is getting a little fuzzy. I think the machines we were using were running Windows 98 or perhaps Windows 95. But I didn't want people to be able to

My memory is getting a little fuzzy. I think the machines we were using were running Windows 98 or perhaps Windows 95. But I didn't want people to be able to do other things on the computers that day as the whole point of the endeavor was to emphasize typing skill, so I looked for some kind of way to make it impossible to do ALT-TAB to switch to a different program. I was thinking I booted it up in DOS only but I also might have run it full screen in Windows and just hoped nobody knew about ALT-TAB. :P