Yes, in truth they are the only accepted keypresses. Then the pointer arrow get working - at lesat with cursor keys. Still, it is apparently impossible to click the icons bar on the left. Then the program tends to freeze. I have to make more tests to be sure, then I will report possible bugs.janbredenbeek wrote: Doesn't it respond to function keys Shift-F1 to Shift-F4?
Anyway, I can proceed with the other working software I've found.
Thank you very much Jan and Derek for your suggestions and support. I never had a modem before, so it's all new for me.