Reply To: per-mille sign
I asked for some assistance with this question and received suggestions from different people with the same solution. As [braille]`0means parts per 100, [braille]`00 would mean parts per thousand. If this symbol is defined in the text where it is used, a transcriber's note would not be necessary. But the symbol would have to be listed on the special symbols page because it is not a symbol of the Nemeth Code.