honestly more than anything I was wishing to be able to edit the word lists used for autofill. Mostly I kept autofill on so I could see if I messed something up, and I started with the most isolated corners that I could fill without having a lot of impacts on the rest of the grid (especially since that improved the autofill performance, since it ran incredibly slowly when it was trying to fill the huge grid before I got much filled out). Otherwise it was just my motivation that I really really wanted to fit in 68A without breaking it up.