Thanks for that tip, Stéphane - that's new to me!
Unfortunately, we have a lot of clients on PXP12, and the DIM CLASS doesn't work on that version since it wasn't added until PxPlus 2016. I tried it on later versions, and it works well, and is easier to manage than building a string of elements for use with the WITH NUM clause of the DIM. I typically use the WITH NUM clause, which I described on the other duplicate post in this forum. But, going forward, I'll probably start using this DIM CLASS instead.