As the description suggests, nothing for the player - it's designed for mod creators that want to enforce building requirements to their constructables, like building them necessarily against a wall (Water filtration machine) or in the center of a room (Bioreactor, Nuclear reactor, Alien containment unit). Building tweaks (as far as I know) is about lifting restrictions instead.
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https://www.nexusmods.com/subnautica/mods/1121
Building tweaks (as far as I know) is about lifting restrictions instead.