[jsvine]

That's right. The Graphic Control Extension blocks preceding each frame let you specify a "delay" in hundreths of a second.

More info here: http://www.matthewflickinger.com/lab/whatsinagif/animation_a...

And more info on the zero-delay problem here: http://nullsleep.tumblr.com/post/16524517190/animated-gif-mi...