Output production and consumption statistics (The values from the "P" menu) for a given item to a signal
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
Related to roboports and logistic robots.
Entities which interact with the circuit network.
I've reloaded into my game and the production combinator sometimes resets to a 1 minute interval - think maybe due to other mods updating? Not sure.
It also shows up as a setting on constant combinators.