This dialog box opens when you transfer a file using the WRQ/Reflection protocol, and the Transfer type selected is Auto-detect, and the option for If file exists is Ask User.
To continue the file transfer, select a transfer type and click OK.
Reflection automatically suggests the best option.
Add extension to list
Select to transfer every file with this extension using the transfer type you selected from the Transfer type box. The selection is automatically updated from the Auto-detect tab.
If you select this option for a file with no extension, you are adding an association between files with no extensions and the selected transfer type or method. Files with no extensions are listed on the Auto-detect tab as <>.