A comparison of state-diagram components that change from TWINSCAN 2.0 to N-SCAN. Blue states are common to TWINSCAN 2.0 and N-SCAN. Green states in TWINSCAN 2.0 are replaced by red states in N-SCAN. (A) Promoter and 5′UTR states in TWINSCAN 2.0. (B) 5′ UTR and intron states in N-SCAN.