Thanks for the link I will take a look later this evening. I used to write in 'C', but gave it up about 6 or so years ago. I really did not want to learn C++ and coding had gotten to be a bit maddening. I am interested and fascinated by the images created by OA, I am certain DDNA would have equally fascinated me. I will keep searching also and anything that I turn up I will PM the link to you. thanks, Louis