Undoing Changes

None of the changes you make actually changes the data in the files until you save it. For this reason, you can undo changes by simply exiting without saving. If you have already saved changes, the program saves the original unchanged data in a backup file. For this reason, you can usually recover from any errors. Backup files have the same name as the original file, with the extension ".BAK". For example, if you are working with the file GROAN.DAT, the backup file would be GROAN.BAK. You can recover the original file using Windows Explorer to rename the backup file back to its original name.