Hello Jean: It is in the example you gave. Example: 10-degree In the above example, if you enter the text in the Print Editor as the number 10, followed by a hyphen, followed by the word "degree. When the text is transcribed to braille format, DBT will not insert a letter between the hyphen and the letter "D". This is because, the letters that make up the word "degree", preceded by a hyphen, preceded by a number do not match the braille rule tables to include a letter sign between the hyphen and the letter "D". This would also be the case if the hyphen was not included. However, if you use the correct abbreviation for the word "degree" (which is dg), preceded by a hyphen (or not), which is preceded by a number, DBT will insert the letter sign before the dg abbreviation, according to the braille rules you are using, when the file is transcribed to braille format. Likewise, when you use the correct abbreviations in either metric or imperial for distance, measurements etc., DBT will insert the letter sign before the abbreviation, regardless as to whether a hyphen is present or not, if it is preceded by a number. On the other hand, if you enter the text using the braille editor and you do not use the correct syntax or, you enter the text incorrectly, which does not comply with the braille rules you are using, invariably, it is down to you and you cannot blame DBT. HTH Sincerely: Dave Durber