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1. An identifier is an unlimited-length sequence of letters and digits. An identifier must begin with a letter or an underscore.

2. An identifier must not match Visual Basic keywords (given in Table 2.2), a boolean literal, or the Nothing literal. In addition, an identifier must not contain operators such as =, +, /, or -.

3. An identifier must be unique within its scope. Scopes are discussed in Chapter 4, “Objects and Classes.”


Cover of Visual Basic: A Beginner's Tutorial


a Visual Basic variable also has a name or an identifier