It surprises me that you do not have a spell checker. Surely I am not the only person who can't spell that well.
I use a Lot of callouts in my how-to software recordings and often miss words. A spell check would greatly diminish review/editing time and spare me embarrassment.
I would also like a custom dictionary so I can make sure that the "jargon" and software specific terms are correct.
Please, please, please add spell check.