Yesterday I was reasonably pleased with finding the PhotoSpiral thingy application but it was lacking an important command…………No it wasn’t, it was me being thick. If you look very closely you will see a tiny red dot and if you click and drag then it will shift the centre of the image. This is a necessity in any of these algorithms. Usually you have to draw a selection. Those that have had a play will have given all the sliders a shove this way and that. You will have noticed that the Magnification slider does not magnify the image but it does increase the number of iterations so your