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.