This example from http://en.wikipedia.org/wiki/Powerset_construction Comment: In the NDFA Extension to the VFSM syntax (VFSMv2N), lambda: and epsilon: are equivalent Comment: In VFSMv2N, lambda: and epsilon: are special transitions indicating transition on no input Start: 1 Accept: 3 4 Edges: 1 0 2 1 lambda: 3 2 1 2 2 1 4 3 epsilon: 2 3 0 4 4 0 3 End: Should become a DFA under powerset construction or equivalent Start: {123} Accept: {123} {24} {23} {4} Edges: {123} 0 {24} {123} 1 {24} {24} 0 {23} {24} 1 {24} {23} 0 {4} {23} 1 {24} {4} 0 {23} {4} 1 {} {} 0 {} {} 1 {} End: