When creating a report, you refer to fields in several parts of the request. For example, in display commands (PRINT, SUM), in sort phrases (BY, ACROSS), and in selection criteria (WHERE, WHERE TOTAL, IF).
Several methods are available for referring to a field. You can:
You can also view a list of all the fields that are included in the currently active data source, or a specified Master File. For details, see the Developing Reporting Applications manual.