@Onesimus: if there is a way to add or remove apps from the launcher using only the keyboard, I have yet to find it! Anyone else found a way?

@Paddy Landau: its great that you did that correction, thanks, I just don't have a way of changing the version on spredubuntu. By the way, it isn't me that is taking the exams, it is my 90 odd students (and some of them can be very odd )

Everyone: Paddy Landau has seen an issue, taken ownership and sorted it. I really would be delighted if others did that and if we could either use spreadubuntu or find another way of distributing variant versions, or brochures/leaflets or other kinds of media.