A new pattern feature I can't find
Hi, I accidentally used a feature a few days ago (I think it might be a new one), but now I can’t find it anymore. I remember selecting part of my linework, and then a pop-up window appeared that generated a repeatable pattern based on the selected area. It’s not the “View → Pattern Preview” function. I even drew a picture of how it worked.
I’ve been searching for it for about two hours now and I’m so confused—was that a real feature, or did I just dream it😰

