Variables are used to communicate information between an application and the user. Each variable you define for a DTL-defined dialog element can be declared, or identified, within a variable list. In addition, each variable can be associated with a variable class that defines its type and length characteristics. The variable class can also be used to define translations and validity checks that are used when a value is displayed on a panel or entered by a user.

Variables and variable classes tells you how to declare variables and define variable classes.