Wizard branching flow -- long description

The wizard branching flow begins with P0 which allows the user to move to P1. From P1, the user can move to P2, P3, or P4, depending on input from P1. P2 and P3 do not lead to any panels. From P4, the user can either move to P5 or to P6, depending on their input. From P5, the user then can move to P6. P6 does not lead to any other panel.