To close an Illustrator document, choose File→Close. The document closes without a fuss. If you haven’t saved before closing, a dialog box appears, asking whether you want to save changes made to your artwork. To quit Illustrator, choose File→Exit (Windows) or File→Quit (Mac). If you haven’t saved before quitting, a dialog box appears and asks whether you want to save your changes. (Consistent good manners — aren’t they wonderful?)