Talk:Commodities/Supply and Demand/@comment-188.222.244.54-20141031210841
if you wanted to save on space you could drop sell / buy to one coloum and just mark with an I (import) or E (export) somthing like:
| Name | Category | Extraction | Refinery | Agriculture | Industrial | High Tech |
| Pesticides | Chemicals | I | E |
otherwise the x`s are much better