Clearer contracts (Little Upsilon)

At the moment, if I want to find out the total amount of any product my country's using (in money not quantity), I can click: Trade>Common market contracts for your country. But this feature isn't implemented for corps I own, making it difficult for me to work out weather or not to build a corp to supply my other corps.

I think if a feature smiler to "common market contracts for your country" was implemented, it would make the job of supplying corps locally a lot easer.