Ways for resetting blocks to initial state during simulation

Hello,

I'd like to know the possibilities for resetting certain blocks (built-in and S-function) to their respective initial state while a simulation is running or paused.

What I try to achieve is reinitializing certain function-call systems incl. all child blocks/systems without (with minimal) modifications and parameter changes (e.g. 'StatesWhenEnabling').

Currently I know of:

• Enabling/disabling function-call systems (if 'StatesWhenEnabling' is 'reset'),
• Certain blocks provide a reset port.

Maybe, is there a way to manually execute 'InitializeConditions' (or equivalent for built-in blocks)?

Thanks for helping,

Pascal