W3C home > Mailing lists > Public > www-style@w3.org > December 2006

Re: [whatwg] HTML syntax: shortcuts for 'id' and 'class' attributes

From: Andrew Fedoniouk <news@terrainformatica.com>
Date: Thu, 30 Nov 2006 20:46:13 -0800
Message-ID: <003401c71503$a1562110$0901a8c0@TERRA>
To: "Ian Hickson" <ian@hixie.ch>
Cc: <www-style@w3.org>

----- Original Message ----- 
From: "Ian Hickson" <ian@hixie.ch>
>
> Unfortuntely that wouldn't be backwards compatible, and so isn't really an
> option.
>

Ian, what does this "backward compatibility" mean?

1) HTML5 is backward compatible with HTML4 so any HTML5 aware UA can read 
HTML4 files
without any additional setup. That implies HTML4 is a subset of HTML5.

-or -

2) Any HTML4 aware UA can render HTML5.  That is possible only if HTML5 is 
exactly HTML4 or its subset (but not superset).

What of these is true?

Andrew Fedoniouk.
http://terrainformatica.com
Received on Friday, 1 December 2006 04:46:28 GMT

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