Information mode

It would be nice to have some sort of UI overlay that displays information better.
For buildings -> what output ports export what, and also what should go to what input.
For terrain deposits show the depth of the items, so just add a number at the botton and top of the bar so you know what height the ore layer starts and ends.
Now you have to count the bars and then hope you start at the right level, just showing coal starts at 5 and goes up to 15 would be easier to do mining.
But as a option you can toggle so you dont see it all the time but only when planning.