5) additional credits equal to estimated  next period  general rate of real growth 
(net output per unit of input )
6) period net sales must equal period credits by changes in prices or credit purchases
7) map system  tracks firms "ins and outs " of employees
changes in capital investments  purchases and sales of credits 
8) gub firms  and np firms all in same system with  profit  firms
part I  http://earthmart.blogspot.com/2011/07/map-frame-work.html