It's got a marking on it that says "Araya w/o HP"

I did the search for it, but couldn't find the thread, and wanted to confirm that these are High Pressure rims, that hook on to the bead. I remember a discussion of it a while back, but no combo of search terms got me to the spot I was looking for.

I was cleaning the rims on the C&V/beater bike, and saw the w/o HP designation... I had been running the tires at a lower pressure as I wasn't sure if they were hooked rims, but it would be nice to be able to crank up the pressure on the gatorskins.