Simply adds the requester chest recipe to the 'Logistic Robots' research. No more, no less.
Small changes concerning balance, gameplay, or graphics.
Adds startup options to separately adjust the thresholds of the overflow/top-up valves from Angel's Petrochemical Processing. Now your pipes won't keep sloshing between 79.9% and 80.1% while the valves waste your precious fluids! (Note: The tooltip does not change, it will still say 80% for both valves.)
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.