??????
Are you serious? Just found this on efbdesktop and if you check my previous topic, about engines, I don't get the use to have this button. For me, there is nothing technical in this, it is just a button that I found on efbdesktop, where I didn't understand what was the N1 and the EPR stuff means! And are we not allowed to learn for our passion?
And for your info, I am going to be 14. You could check that my previous posts were all basic questions for you but I don't understand it.