The Segment Layout Editor uses the Data Division of a COBOL program as input for creating a segment layout. You can create one or more layouts from each Data Division.
To enable the Segment Layout Editor to read the Data Division of a COBOL program, you must first compile the program in Enterprise Developer to produce a debug information (.idy) file that can be read by the Segment Layout Editor. The segment layouts that you create from the .idy file describe the name, length, and picture of the fields in a data record.