Thanks for adding the NOT operator! It will be so useful!
I was testing it out, and realized that the right-click menu is partially broken in this beta... when selecting more than one Greek or Hebrew word in a row, and then right-clicking on them, the menu should show you morph details for each word, and give you search options to find all of them in a row. None of those are available in 7.10B1. Only info and search options for the first word are appearing.
This same problem occurs on reverse-interlinears when selecting multiple words... only the first original-language word info and options appear.