Well, aside from the advantage that the PAO won’t spill over on the standard 30-digit line, it also has the same disadvantage that a 3x3 grid does… you get one loci wrong you potentially lose the points for all 3 rows.
Feel free to add “braille cell” as 6. above… but I doubt many PAO folks would run the risk of potentially losing 3 rows.
I kept it as such because horizontal braille input uses both big endian and little endian, so “110 110” would be a J (2+4 = 6) on the left and an M (1+2 = 3) on the right. The option was to either read binary the same way or read it JJ in binary and type it JM for braille, so I went with the vertical approach instead… if that makes sense. Plus, I use the PAO braille images (i.e., my binary images) for speffz when doing Rubik’s cube blindfolded.
Make sure you ask for grade 1 braille (i.e., uncontracted) otherwise you’ll have to learn a lot more than just the alphabet, which is not really related to the braille cell itself but more to shorthand in general.
(There are some fonts and web translators too, so you can just braille 1 translate text online to practice if you want to read with your eyes rather than your fingertips.)
Basically uncontracted (aka: grade one) Braille includes the letters “A” through “Z”. It may also include some punctuation marks such as period, question mark, capital sign, and comma. Contracted (aka: grade two) Braille consists of a ‘shorthand’ in Braille whereas some words have shortcuts such as the letter ‘C’ represents the word ‘can’ or ‘td’ is the word today. There are 189 Braille contractions. Very young children will focus on uncontracted Braille.