Where could I go to learn more about Formula Extension (FOX) coding? Is there a book that I can read to obtain better knowledge?
I have not heard of any SEM books in the market and we are already in the process of writing a book on BPS. Under these circumstances, the best way to learn FOX extension is the detailed help that you can reach via F1 button while you are in the FOX editor. The help menu and the examples cover most of the FOX needs in planning applications. A good approach to learn the working mechanism of FOX is the use of messages to display the values used/generated through FOX and analyze them.