Simulation worlds and sub-assemblies

[NogginBops]

When dealing with sub-assemblies the idea of viewing the state for a particular instance of a sub-assembly becomes very useful.
But how this is done might feel more convoluted that necessary.

Logisim uses the idea of a hierarchy for the current simulation where you can select specific instances to inspect.

This is something we have to deal with in our simulations too.

What I would change is that in the "assembly browser" we always open a new state instead of opening the last viewed instance.

[weerox]

Does a state need to save anything other than the state of wires and input/output pins (on, off, floating, error) and substates?