I'm speculating what to do for Practical Exercise #2 ... there are a number of ideas floating around. I'm considering using the colour grid shown left, which has been used in previous practical exercises. Because of the disruption tonight with the lack of internet connection, all plans have gone out the window. The likelihood will be a selection of colours/numbers from this grid, much in the same format as the ESP cards. I'm going to spend the next day or two perusing over the other options I have .... so watch this space.