Streaming

I was browsing the net and I found a PHP chat script that claimed that it does not refresh, rather it has "streaming text". This got my interest and was wondering how the script did it. I downloaded it's source code but couldn't find anything useful in it, very hard to read in my opinion. I did a search on PHP.net for streaming but I couldn't understand much of that, just my noobishness I suppose. How exactly would you go about streaming in PHP anyway? This has my interest now... Thanks, Stephen Craton http://www.melchior.us <http://www.melchior.us/>