[Dx4win] DX4WIN 909 config file

[Radivoj Kar, F6GNZ]

In DX4WIN 909 Help list it is written:
Write current preferences to a text file formatted as an INI file 

Saving your current preferences in a text file allows you to restore your setting to a previous configuration. This way you can save multiple preferences, but it also facilitates upgrading to newer versions when the format of the configuration file has changed. To reload your preferences, see Load Configuration File.  
You will be prompted for the name of the text file, which, by default, is the file config.txt in the SAVE directory. ????
WHY Config.TXT ??73, Radi f6gnz