When this option is selected, you can use a double-click to initiate file transfers.
When this option is selected, you can also select the name of the application that you want to use for unregistered file extensions.
This option is particularly useful since it is possible that you may be downloading files from a host system that are not
registered on your Windows PC.
When file extensions are not registered, Windows displays a dialog that allows you to choose an application to use when opening
that file. By choosing the application that you want to use to open the unregistered files, you eliminate that time consuming
step.