Thanks for your ideas. I am not sure whether they will work for me, but I will definitely give them some thought.
Another question: Is it possible to make a formula on the Order entry specifications. Example. I use a 5% discount. Then when I design the invoice specification I tell it to calculate 40% of the discount. I am using field E17. I am visualizing something like (E17*0.4). I doubt very much if this is possible but I thought I would ask.