Hi, I am wondering if anyone has used thumb Braille on the Icon. I can not seem to get the middle collumn of keys to give me additional Braille. such as number 2 for dots 1 and 3, number 5 for dots 1, 2, 3, number 8 for dots 4 and six and number 0 for 4, 5, 6. For example, if I want to get Braille letter P, I am supposed to hit numbers 5 and number 3 at the same time as mentioned in the user guide but it does not work. Should I be activating some other feature to get those keys to work in thumb Braille? Let me know. thanks, Bill Miami Beach, FL