In the True DataControl Expression Editor, you can use the Operators and Function and Constants combo boxes to make different sets of VBScript functions and operators available for building expressions. This reference provides a brief description of each function and operator, organized by category.
For more information on using VBScript, consult any available reference guide, such as the VBScript Reference in the Microsoft MSDN Library.
True DataControl's expression language adds two functions to the standard VBScript function set: IIF and Format. Both functions are supported by Visual Basic, but not by standard VBScript. True DataControl makes them available for your convenience.