Thank you very much, Mega Voice, for your answer.
However regarding my questions I asked the heaven is not really clearer.
I would be grateful to compare the icons between the S975 and S970 to recognize the differences between those Keyboards and if an icon on the S975 is not available (if mentioned in the names of the sty-, txt- and mid-files) what happened once used: would a RGT-file find a i.e. sty-file ?