Service Mark

[Lauren]

> What is a service mark? I know trademark, registered 
> trademark, copyright.
> 
> Karen L. Zorn

A service mark is a word or symbol that uniquely represents the service that
is provided by a business.

http://www.uspto.gov/web/offices/tac/tmfaq.htm

So, is the 2120 in Word an ASCII code or something?  Any number (withing
some range that I don't know) followed by Alt-x will produce a symbol.  Is
there a reference for the numbers and symbols?

Lauren