Drop these into your VASL/boards/overlays folder and VASL should recognize them.

Here's how to enter the overlay info into VASL's "Add Overlays" dialog (case does not matter):

- need to enter both hex1 and hex2 for the factory

- only need to enter one hex for the debris overlay

- only need to enter one hex for the rubbled city because its hexgrid is set to start at I1