### 28.6.4 Using control structures in expressions

Mif2Go provides predefined loop and conditional control structures for use in macro expressions. You cannot nest loop or conditional structures; instead, the outer macro must invoke another macro for the inner loop or conditional test.

In this section:

§28.6.4.1 Understanding control-structure elements

§28.6.4.2 Using conditional expressions

§28.6.4.3 Using loop structures

| 28.6.3 Displaying expression results in output |  | 28.6.4.1 Understanding control-structure elements |