Since you've finished writing a program, you need to save a project. Select Save Project option from a File menu, and write in the file name in a message window (myprog.swp in this case). After you click on OK, project will be saved. You can access SYSWIN file contents only from SYSWIN; file type is identified by extension:Project.swp - SYSWIN programProject.swl- SYSWIN libraryProject.swt - SYSWIN patternProject.swb - SYSWIN back-up fileProject.prg - PMD program