Multiplier to energy used during operation (not idle/drain use). The minimum possible sum defaults to -80% and can be changed through EffectReceiver::consumption_limits on the machine.

Modifier to crafting speed, research speed, etc. The minimum possible sum defaults to -80% and can be changed through EffectReceiver::speed_limits on the machine.

Multiplied against work completed, adds to the bonus results of operating. E.g. an extra crafted recipe or immediate research bonus. The minimum possible sum defaults to -80% and can be changed through EffectReceiver::productivity_limits on the machine.

Multiplier to the pollution factor of an entity's pollution during use. The minimum possible sum defaults to -80% and can be changed through EffectReceiver::pollution_limits on the machine.

Adds a bonus chance to increase a product's quality. The minimum possible sum defaults to 0% and can be changed through EffectReceiver::quality_limits on the machine. If negative values are allowed on the effect receiver, the product's quality can be decreased.