ovals, stars, triangles, a straight line that starts at one point, turns off the shutter, moves back to the start of said line, and repeats it, i dunno, i'm just looking for anything and everything, i wanna go crazy and have as much fun possible

does anyone have any experience making their own shapes editing the sg.dat file or have any shapes they made they'd be willing to share or know of anyplace which i could just get shapes to load into a sapphire 2000?