nrmm: Natural-resource-from-material Multiplier
Variable
Global
Natural-resource-from-material Multiplier []
nrmm = tabhl ( nrmmt , msl ,0,10,1)

nrmm in the updating graph: ( how to read )
In nodes
msl : material standard of living
nrmmt :
Out nodes
nrur : natural-resource-usage rate
tabhl
