This page demonstrates how text can be typeset and pushed to a web browser in real time. The chat box below is an interactive, dynamically generated, animated GIF image. Each time a line of text is to be displayed, the server renders and sends the next frame of the animation.
Note to those arriving from 2018: Works best in Firefox. At some point after 1999, browsers diverged in how they render incomplete animated GIFs. Firefox still seems to do the right thing, though.
This little hack was written in the night and wee hours of Saturday, 25 September 1999. The font is the product of some compulsive pixel editing.
Source code is available under the GPL.