BETTER VALUES would be ...
2 settings - extreme minimum think "phonebook"
12, 16
8 settings - SINGLE STEP PRECISION - normal reading range from small think "Gideon Bible" upward
18, 19, 20, 21, 22, 23, 24, 25
8 settings - SINGLE STEP PRECISION - magnified as age = gradual decline
26, 27, 28, 29, 30, 31, 32, 33
6 settings - visually impaired reading
34, 38, 42, 46, 52, 58
I'd love someone to tell me where this table is in the guts of koboland so I could change the original poor values