Reply To: Vertical Bar
In response to your second question, no, I would not use a letter sign on the r or the pi in the fraction
[simbraille]?r radians/.p radians#[/simbraille], because there should not be the opportunity for confusion since contractions can't be used in contact with the opening fraction indicator or the fraction line (Nemeth Code section 55.a.i).
edited by kdejute on 7/18/2015