The file you tried to load in the current window was already loaded in another window. For example, this message appears if you open SOURCE.C in the Program window and then try to open SOURCE.C in the Notepad window. If you want to load a file that is already loaded in a different window, press F6 to move to that window and do one of the following: ■ Open the File menu and choose the Save As command to save the file under a different name. ■ Open the File menu and choose the New command to clear the file.