These options control the creation of backup files when you save a modified file to disk. You can control where backups are stored, how many old backups to keep and options for controlling the style of the backup file name.
"After looking for a good text editor for UNIX for several years I finally found one that met my needs in CRiSP. I have used vi, emacs, xcoral (not to mention edt, teco, brief, tpu, etc, etc.) but prefer using CRiSP for two main (but not exclusive) reasons. First is the language sensitive syntax colorization and second for it's ease of use (brief editor like functionality)."