The Statements Included in the ILF

Each ILF statement is identified by a unique keyword (such as IF, READ, and SET) that indicates to the system what actions to perform. The ILF statements can be grouped into seven functional categories as follows:

·    Field-related statements modify and compute values for fields within an application.

·    Date/time statements calculate and compare dates and elapsed time periods.

·    Control statements allow you to exercise control over the processing flow in an ILF routine, and to invoke non-APPX programs.

·    Condition-testing statements include IF, AND, and OR statements that perform logic tests.

·    Image-related statements allow you to override the “visual” aspects of a screen or report, such as whether an item should be highlighted or allow user input.

·    File-related statements control file management operations, such as creation, deletion, and updates.

·    Text-related statements allow you to provide free-form text messages to users or to insert comments within a routine.

Table 4-1-1 below contains a list of the keywords in their respective categories. Each of these statements is described in detail in Chapter 4-6: ILF Keyword Reference.

Table 4-1-1. Statement Keywords by Category