When you open a PL/I or COBOL program in an edit session for the first time after connecting to a system, copybooks and include files are downloaded. If you open the same program again in the editor, the copybooks and include files are not downloaded. You can download individual copybooks and include files in the editor using the Refresh cache pop-up menu item. If you disconnect from the system and connect again, then the copybooks or include files are downloaded the first time you open a COBOL or PL/I file in the editor after reconnecting.