comment:
This is an IPAT-S script. IPAT-S is an open-source scripting language
for developing sustainability scenarios. It can be run using the free
IPAT-S software, available from:

	http://ipat-s.kb-creative.net/

For more information, please contact the author of IPAT-S,
Eric Kemp-Benedict (eric@kb-creative.net)
:comment

# Sample IPAT-S script
# Demonstrates use of standard external library (IPATS_standard.dll)

base year 2000
scenario years 2010 2020

load _interpolate from 'IPATS_standard' as Interp

summvar pop, GDP
pop = 300, 320, 340
GDP.0 = 22100 * pop.0

::	pop >>gr(1.2%)-> GDP

summvar pollIntens

call Interp using pollIntens GDP/pop 	\
                  5000 	1.2 		\
                  10000 1.1 		\
                  30000 1.0

report pollIntens as "Pollution Intensity"