Jean: When you use the two letter abbreviations for distance, liquid and weight measurements (whether they are measured in metric or imperial), DBT will place a letter sign before them, regardless as to whether there is a hyphen or not. However, if you spell one out, such as degree, following a hyphen, which is preceded by a number, in your example,, DBT has no choice but to treat the d e g r e e as a number because, the letters of that word are all within the first letters of the alphabet. And, as we all know, for those of us who use English Braille, the first ten letters of the alphabet are used as numbers, when they are preceded by a hyphen, preceded by one or a group of those letters, preceded by a number sign. By the way, the two letter abbreviation for degree is "dg", without the quotes. HTH Sincerely: Dave Durber ----- Original Message ----- From: Jean Menzies To: DBT list Sent: Friday, November 19, 2010 6:28 PM Subject: [duxuser] DBT and the dreaded letter sign With number/letter combinations separated by a hyphen, I'm wondering why DBT sometimes adds the letter sign and sometimes not. Example: 10-cm (letter sign added. 10-degree (no letter sign. Potentially, according to EBAE, 10-degree could initially be confused with the "deg" first being read as numbers. But then there is a combo like 4-kg that isn't confusing, and DBT still adds the letter sign there. What is the DBT logic for when it adds and doesn't add letter signs with numbers, hyphen, letters/words? Jean Appealingness is inversely proportional to attainability.