This program allows you to rename the files in a folder using string find/replace functions. E.g. you could change all file “Ian” in all file names in a folder to “Iain”! For my system I have set up a folder called “File Rename” and always move files to that folder and then rename them and then move them back. By copying to that folder and then moving back you can very quickly create duplicate files with different names.
A typical usage would be if you had a keyword in the file name and want to make a blanket change to all such files.