Control Structures (Basic Syntax)
Formulas without control structures execute each statement in the formula only once. When this happens the formula is evaluated. The statements are executed in a sequential fashion, from the first statement in the formula to the last. Control structures enable you to vary this rigid sequence. Depending upon which control structure you choose, you can skip over some of the statements or repeatedly evaluate some statements depending on certain conditions. Control structures are the primary means of expressing business logic and typical report formulas make extensive use of them.
Basic syntax supports many of the main control structures from Visual Basic with the same syntax. One of the advantages of the Basic language is it is easy to read block notation for control structures. This simplifies the writing and debugging of complex formulas.