Hi Phil, there's nothing like cutting your own throat, but here goes, for some reason you gave me 12 points today, and it should have been 2. There, I feel so much better now that I am in last place.
I don't think you will find "unvoid" is a word. But I do believe "non-void" is. Or just use the opposite with is "valid". I was pretty crap at English at school, CSE grade 4, so I sure someone will now come and correct me.