
Originally Posted by
polyhedra
i thought HTML5 would be useful because of tag like <audio> and <video> but technically sure you could use this in a document that is html 4.
It may be useful one day, but the worry is that browser makers won't agree on single audio/video formats that can be used everywhere. At the moment, it's an embarrassing mess that threatens to sink these elements. There isn't great support for these experimental elements yet anyway.
The people developing HTML5 want us to move away from the idea of HTML versions, calling it a "living standard". This basically means that you don't need to draw a line in the sand between HTML4 and 5. There's basically HTML, and you can pick and choose elements based on browser support. The only thing to change from your HTML4 documents might be to move to the generic doctype etc.:
Code:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
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