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© 2005, George
Gross, UIUC
STUDY SCENARIOS
qReference
scenario: the pre-expansion system
qScenario
1: addition of line ( 3 , 4 )
qScenario
2: addition of line ( 5 , 6 )
qScenario
3: addition of lines ( 3 , 4 ) and ( 5 , 6 )