As I've said earlier, the UI is important when dealing with new mechanisms, but it's also something that takes me a lot of time to code, so I hope you'll find this addition useful...
The
Resources Stock section is only a copy of the data already available on the City Banner's Tooltip, just cleaner
The other sections are the real addition, and will have their own tool tips for even more details, thanks to the code added the previous week to gather trade data.
The
Resources Supply section shows how the city has acquired resources this turn:
Terrain, Production, Import (from other Civilizations), Transfer (from own cities), Pillaged (from your units, not implemented yet) and Unknown/other
The
Resources Demand show how the resources were used/lost:
Consume (by population or industries), Export (to other civilizations), Transfer (to your own cities), Reinforcements (to your units), Stolen (by enemy units, not implemented) and unknown/other
The
Import/Export Routes section list all foreign cities connected to this one and shows:
City name, Route Type (Trader, Sea, River, Road, ordered from most to less efficient), the efficiency (dependent of route type and distance, a trader being always 100% efficient) and the transport cost (directly related to efficiency, added to the cost of the resources from your city to calculate the transaction - and so the taxes you collect - and how it affects the cost of that resource in the destination city, relative to the quantity)
The
Internal Transfer Routes show the same info but for your own cities that are connected to this one. The transport cost is still used to calculate the change of the resource's cost in the destination city (note that in both case a city doesn't ask for a resource of a higher cost than its local cost), but internal transfers does not generate taxes.
The
Supply Lines To Units section list all units actually linked to that city, and the resources they need for reinforcements