Anson, I have found the problem. In the Wiki it says that the LCD Libraries are included inside the Wio Terminal board Library. This I proved to be correct as I installed the Wio Terminal on an Arduino IDE with no libraries added, and the first test sample in the Wiki worked and the screen turned red. I also downloaded the Seed_Arduino_LCD library and found that it contained a number of libraries that I had installed in the IDE. As the code uses the # include with the double quotes, I would have thought the local files would have been used in preference to the files in the Library folder. At the moment it looks like I will need two installations of the IDE one for my normal TFT applications and one for Wio Terminal.