Identifiers are names that you give to events, states, and variables in DPL programs. An identifier is a sequence of 1 to 256 characters. The first character of an identifier must be a letter, and the following characters can be letters, digits, or underscore characters (_). DPL treats uppercase and lowercase letters as distinct characters. This means you can define distinct identifiers that have the same spelling but different cases for one or more of the letters. An identifier cannot have the same spelling and case as any of the DPL reserved words. An identifier also must have at least one character.

Versions: DPL Professional, DPL Enterprise, DPL Portfolio