2.1.271 Part 4 Section 18.104.22.168, font (Properties for a Single Font)
a. The standard defines font name with an unbounded string length.
Word limits font name length to between 1 and 31 characters.
b. The standard does not describe font names as case insensitive.
In Word, font names are case insensitive.
c. The standard states that the name attribute specifies the name of the font.
Word prepends the font name with an @ symbol to signify the font should be used for rendering vertical text.