Thanks for the response. Hadn't thought about using a TN to get rid of the $ sign. After looking at the material as well as the surrounding text, I decided on a nested list format.
Thank you for your response. Using textures had occurred to me. It is just something I haven't seen before. Glad to know I can do that. I have used the APH Library a lot but was not aware of the Canadian image library. I will check it out.