Chapter 2. Development Environment and Procedures 2.4.6 Error Messages and Their Indication onto the Main Window [ 1 ] Selecting either an editor or main window as an error message output device According to the procedure below, you may select whether error messages should be outputted to an editor or main window if an error message file (XXX.ERR) is produced. (1) From the Tools menu, choose the Options command. The Set Options dialog box appears as shown below. (2) In the Set Options dialog box, select either "To the Editor" or "To the Window" check box. (The default output device is Editor.) 31