An identifier is used to name variables, macros and subMacros.

The first character of a variable name must be an ASCII letter (uppercase or lowercase). After the initial character the underscore character (_) and the digits 0-9 are also valid. Spaces are always invalid. Some examples of valid variable names:

Macro and subMacro names are case-insensitive. After the keywords MACRO or SUBMACRO, letters (uppercase or lowercase), digits, special characters and spaces are allowed in any order you choose. Some examples of valid macro or subMacro names: