NETEX-G is useful since it reads one of the most standard file formats in the PCB and packaging industry - Gerber. Even when the original design data is lost or unreadable (remember legacy systems?) the Gerber data remains.
Gerber data represents exactly how the board was built -- design software has been known to output Gerber different that the designer's intent.
There are three applications that NETEX-G has been used for:
Netex-G can reverse extract the net connections and compare them to the desired connections; detecting any unexpected opens or shorts.