In-response-to-base:
Date: Wed, 05 Feb 1997 23:17:02 GMT
From: Andy Clapham (andyc@easynet.co.uk)

Proposal : Simple but useful tag : include

HTTP/1.1 200 OK Date: Tue, 24 Nov 2009 18:21:36 GMT Server: Apache/2.2.6 (Fedora) Last-Modified: Thu, 30 Oct 1997 19:45:03 GMT ETag: "2600ad-2a9-59212dc0" Accept-Ranges: bytes Content-Length: 681 Connection: close Content-Type: text/html; charset=UTF-8

Proposal for a new tag : include
takes parameter src=URL

Includes contents of URL into the document at tag position.

How often have you used the same bit of HTML in a set of pages, and had to update each page individually when it changes.
OK html editors can use preprocessing to acheive similar results, but surely this should be a standard part of HTML.

example
page1.html
<html><head>Test1</head><body>one two three <include src="page2.html"> four five</body></html>

page2.html
three and a half

when page1 is loaded, page2 is referenced to produce

Test1
one two three three and a half four.

This would make my life so much easier.