This setting, when enabled, keep the shell lists (the boxes used to browse your folders and view your files in File Browser) updated to any external change (ie. folder creation using other software).
NOTE: Win9x systems (Win95, Win98, Win98SE) may have troubles using this feature. We suggest you to keep it disabled if you have problems running or closing Comparator Fast.
If you need to refresh folders content while browsing, you may use the Refresh pop up option on shells folders.