Types/EffectTypeLimitation

A list of module effects. Modules with other effects cannot be used on the machine. This means that both effects from modules and from surrounding beacons are restricted to the listed effects. If allowed_effects is set to nil, the machine cannot be affected by modules or beacons.

Value	Module type
speed	Modules that increase or decrease the machine's speed.
productivity	Modules that make the machine produce bonus items.
consumption	Modules that increase or decrease the machine's energy consumption.
pollution	Modules that make the machine produce more or less pollution.

Example: (allows all module types)

{"speed", "productivity", "consumption", "pollution"}