I am trying to make a custom through hole pad for a part but it needs to be either oblong or rectangular but there does not seem to be a way to specify anything but a circle drill hole. I know board houses can make plated through hole square pads but I cannot seem to figure out how to do it with Eagle CAD? I see I can draw tracks on the pad with a circle hole in it and block out part of the hole but I am not sure if that will be understood by the board house with respect to a rectangular plated through hole pad? Any suggestions?