Hi, I have coded a tiny prog to launch the GRX test programs. It's simple but nice (I think). The actual version only react to mouse and the Escape key, if people like it I can enhance it. I put the program under GPL, but no problem to put it under PD to easily add it to the GRX distribution (really I think example programs must be PD, because they are examples :-). I will be happy if someone try it, you can download sources from: http://teleline.terra.es/personal/malfer/zipfiles/demgrx10.zip Greetings M.Alvarez. P.D. Sorry, for my bad english.