racter sequence which does not appear in quotes, and which is not in the format for a cell reference, is presumed to be an identifier. Identifiers serve two roles: they may be function names, or they may be labels.</P>
<P>
The scanner merely notes that an identifier has been found; it does not take any other action. The parser will find out what the identifier signifies. If the identifier's position indicates that it is a function (but the name is not that of a built-in function), the parser will prompt its