What do these commands do?

[ArneHD]

I can't work out what these things commands actually do:

command = { type = capacity_cost_mod value = -10 }
command = { type = factory_cost_mod value = -10 }

Could someone please explain to me what they do?

 

[noddysseus]

The price of expanding a factory and building a factory is decreased by 10%... I think.

 

[ArneHD]

The price of expanding a factory and building a factory is decreased by 10%... I think.

Ok, thanks, that makes sense.