Here is a translation of the above:
 
When you save Ecco files,  ecco can keep one (or more) backups.  Thus, with each save,  Ecco could keep a sequence of [your file name].bk1, [your file name].bk2,[your file name].bk3,[your file name].bk4, etc.
 
How many backups are kept, YOU select via the File > Properties > Backups dialog.  
 
This setting applies to both manually saving a file (Control + S), and auto-background saves.
 
 
ALSO,  there is an optional 'Network Backup' (check option to activate, and Browse to select directory and file name).  This option is also found in the File > Properties > Backups dialog.  
 
You can select a networked drive (if you have one and want to use it for a backup) OR,  you can use any folder on your computer (and any file name) to save a once a day backup OUTSIDE OF THE SEQUENTIAL SET OF BACKUPS.    
 
 
In addition to selecting how many versions of the last saved document are kept,  you can select how often ecco auto-saves its files (if at all).
 
That is set in the Tools > Options > Files dialog.  Checking "Autosave all files every"  __ min  (and selecting desired interval).  well set up the auto-save option.