You can modify a Macro imported from Pacbase or create new ones in the Design Explorer view. In both cases, you must open the COBOL editor dedicated to Macrostructures from the design file of a Macro in the COBOL Source tab.
When you create a Macro in the Design Explorer view, you can generate the Macro even if it does not contain any COBOL code yet. For more details on the creation and definition procedures for a Macro, read the help pages on the Macro entity.
You can modify the COBOL code of a Macro from an instance of Macro in a COBOL Macro editor. You can import files generated in Pacbase. In that case, you need to import the Macro file with a .ta2 format into the Design Explorer view. You must dispatch the Macros in the same view, in the same location if the output file of the Macro generated contains the code of more than one Macro. The source of the Cobol is saved in the design file of the Macro in the Design Explorer view. Then to open the Macro, double-click its instance.
You can modify the code of a Macro in a textual editor in the Source COBOL tab which open with the design file of a Macro. The COBOL Macro editor is used to insert or modify the COBOL code in a Macro and to identify the code easily in the générated program. Consult this page COBOL Macro editor for details on the editor.