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 ILF Keyword Reference.
Table 4-1-1. Statement Keywords by Category
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