Expressions are used primarily for the following tasks:
Customizing the User Interface and Administrator Interface forms. Forms use XPRESS to control the visibility of fields and to transform the data to be displayed.
Defining flow of control in workflow. Workflow uses XPRESS to define transition conditions, which determine the order in which steps in the workflow process are performed.
Implementing workflow actions. Workflow actions can be implemented using XPRESS. Action expressions can perform simple calculations, or call out to Java classes or JavaScript to perform a complex operation.
For information on using expressions in workflow scripts or editing forms, see Chapter 1, Workflow.