I can't believe any one would stop typing, change the ball, just to get the small th. Stop again and change the ball. I spent 30 year in administration and would have never wasted time doing that when 187th or 111th would suffice.
All that by a reserve colonel who doesn't type but is typing a Pearl-Harbor-file CYA memo about dirty politics in his Air National Guard squadron. Typing it on a mysterious machine never otherwise used in his office which produces what look for all the world like MS Word documents and nothing but.