QuickC displays this message if you have edited the file but have not saved your changes. You need not save the changes to build a new version of the program. You must save before you exit QuickC if you wish to maintain the latest version of your source code on disk. To avoid confusion, save your work as you go along. Saving your work frequently is also a good idea in case serious errors or system crashes occur. Choose <Yes> to save the changes before proceeding with the command. Choose <No> to discard the changes before proceeding with the command.