Well it appears it is only a local thing. Your the only member here that appears to use it. As mentioned very few has even heard of such. I teach and lecture nationally, I too as well have never heard of such.
That's very interesting. Yes then, I guess my state is adopting its own abbreviations. I thought it was a generational thing as opposed to regional, but now I know it's not the norm. Again, interesting. Makes me wonder what other terminology may be different.