Yup. Interlaced GIF (for progressive rendering) was the norm during dialup BBS stuff. As far as I know, web browsers always supported it. Dunno why the custom d

Yup. Interlaced GIF (for progressive rendering) was the norm during dialup BBS stuff. As far as I know, web browsers always supported it. Dunno why the custom didn't make the jump from BBS to web.