With this action you can rename any file that has been saved by your game. You give the name of the file to change (as a string) and then the new name (also as a string and including the file extension), and the file will be renamed. Note that you cannot rename any file that was bundled as an Included File with your game (see the section on The File System for more information).
Argument Description Filename The name (as a string) of the file to rename New Name The new name (as a string) for the file
The above action block code will check to see if the file "checkpoint.sav" exists, and if it does it then checks to see if the file "checkpoint_OLD.sav" exists. If that file exists as well, then it is deleted, and then the original "checkpoint.sav" file is renamed to "checkpoint_OLD.sav". Finally a buffer is saved as "checkpoint.sav" (essentially we are backing up a saved buffer file each time we save it, so that there is always a "current" save and an "old" save file).