merged --daniel34 Super minor bug. When I right click the map view buttons for turret range, electric connections, etc. the button doesn't toggle but the view does. In this way,I can have it so that the button is unpressed but shows whatever information that toggled button would have shown anyways....

I think these would be useful, but maybe balance it for use with specific materials. So, for example, you could only use them with raw items that are naturally used in vast quantities, but don't allow them to be used with more complex items. Thus transporting large number of complex items via train ...

Alternatively what you could do with the tree is to leave the gui as it is now, and when the user clicks on a research, all the required researched are highlighted a new color, like blue or something. Then we could see all the required researches without needing a brand new graphics