Ah, you mean this Article?

http://www.apug.org/forums/forum37/114562-ilford-kodak-resources.html

You are right, it illustrates the difference between pre- and post- flashing. In the diagrams shown, Pre-flashing appears to affect the entire scale, while Post-flashing appears to affect the toe (highlights). The diagram is not an actual photograph, as it is in Publication B-3, but the kitties and kitchenware photo doesn't show pre-flashing.