ftp://(user)@(password):(host)/(file)
The three dot buttons are "chooser" buttons for the file and table boxes. Use the "Append data" radio button to append data to an exisitng file.
Entrance import supports these formats: tab delimited, comma separated (CSV), space separated, colon separated, simple lines of text, and Apache log formats.
Space separated format is an innovative Entrance feature: use it when you need to break lines into tokens separated by one or more spaces.