This is an excellent bit of software and we have been using it with much success for both internal and external exams.
We now have the situation where a pupil who is eligible for a scribe has decided to word process their exams and is thus eligible to use a spell checker. We could use a locked down version of word but doesn't have all the other nice features that this has.
Is there any way to incorporate a spell checker? Clearly the ability to have it turned on/off would need some tight control but I am sure you could come up with a pretty robust solution for that.