I'm a 2000's programmer, but I still remember a lot of this stuff. Anyone remember doing rounded corners with a 3x3 table where the corners were GIF's/PNG's cut

I'm a 2000's programmer, but I still remember a lot of this stuff. Anyone remember doing rounded corners with a 3x3 table where the corners were GIF's/PNG's cut from Photoshop to create the illusion of a rounded div?