If the icon is set as a transfer mode, a file is transferred switching mode automatically. Detailed settings are done here.
The file type registered in the list box (file with an extension) is transferred in text mode. All files of other file types are transferred in binary mode. Major file types are already registered, you do not need to set file transfer to transfer files.
[Add] button
File types to be transferred in text mode is added.
[Remove] button
File types to be transferred not in text mode but in binary mode are removed from the list.
[Restore Defaults] button
Restores to the mode in which file types to be transferred in text mode is set.