The XLS generation is not automatic, but must be done from the project explorer, right clicking on the .gpio file, asking for Excel generation.
The generated file will be located inside the project's 'src-gen' folder.

The developer can then open the XLS file by Microsoft Excel© in the src-gen folder, using right-click + open With.../System Editor menu option.
WARNING : double-clicking is not supported because no OLE editor is supported

