While running a long simulation, over half an hour or sometimes more, when a break point is hit (e.g. logic contention) it would be very useful to be able to rewind the simulation to a point just before the logic contention happens and proceed to single step. It would be useful to be able to repeat this rewind and single step several times while switching between sheets to get a proper view about what is happening.
The rewind option would probably need a minimum time step to save the state for, to allow the user to rewind to a fixed time before the breakpoint to facilitate single stepping.