Directions for the Translator to Braille 
Technical Documentation: Characters
Text Encoding
Any of the following encodings may be used: ISO-8859-15 (latin9), ISO-8859-1 (latin1), UTF-8, Windows 1252 (cp1252). Apart from the letters with diacritics in Portuguese, some characters with codes greater than 127 are accepted but they are converted either to commands or to sequences of ASCII characters, as described in the section on character conversion.
Characters in mathematical expressions
The characters in the following table have an interpretation when in expressions that may be unexpected.
| out of expression | in an expression | ||
|---|---|---|---|
| " " (space) | separator | [ignored/error] | |
| "." (period) | period | dot/separator | |
| "," (comma) | comma | decimal comma | use instead of decimal dot |
| ":" (colon) | colon | division | cf. \talque
[such that in sets] |
| "|" (vertical bar) | divides |
cf. \talque
[such that in sets] | |
| do not use it for modulus |
