Col68:
Hi Dnwheeler, thank you for your answer I will check to see what is the name of the fileI love you PaulS thank you for your support, I will immediately modify the README by README.txt. thank you so much.
No, don't change any names. Change the system properties to show file extensions. The .txt will then appear on the end of the README name. Only then should you make sure the DFR_Key.cpp and DFR_Key.h names appear just like that.