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RE: [#828] Definition of foreground and background

From: Gregg Vanderheiden <gv@trace.wisc.edu>
Date: Mon, 21 Jun 2004 17:11:42 -0500
To: "'Michael Cooper'" <michaelc@watchfire.com>, "'WAI GL (E-mail)'" <w3c-wai-gl@w3.org>
Message-ID: <auto-000002133125@spamarrest.com>

Hi Michael

I think that is too narrow.  You could have content provided over content
and you would have the same problem.  

Foreground Content:  Content that is presented in front of or on top of
other content.

Background:  Anything that appears under foreground content.  This could be
decorative material or meaningful content. 

Also, I THINK we want to restrict the success criteria to text over a
background, at least at the upper levels.  Would be good to keep it general
- but I think we should focus on text over a background for our primary


 -- ------------------------------ 
Gregg C Vanderheiden Ph.D. 
Professor - Ind. Engr. & BioMed Engr.
Director - Trace R & D Center 
University of Wisconsin-Madison 

-----Original Message-----
From: w3c-wai-gl-request@w3.org [mailto:w3c-wai-gl-request@w3.org] On Behalf
Of Michael Cooper
Sent: Monday, June 21, 2004 12:58 PM
To: WAI GL (E-mail)
Subject: [#828] Definition of foreground and background

The techniques working group was looking at Guideline 1.4 [1] and trying to
figure out what HTML techniques we would create. We weren't sure that the
definition of "foreground" and "background" was clear enough for us to write
techniques to. Is foreground text and background everything else? Can an
be foreground or background, and if so what's the rule for determining when
which? What if there is text in a background image? We need a definition for
these terms in the guidelines.

A starting proposal:

Foreground: primary content intended for the user.

Background: decorative or ancillary visual elements that is co-presented
foreground content, with the background generally appearing "behind" the
foreground, but not itself part of the semantic content of the page.

[1] http://www.w3.org/WAI/GL/WCAG20/WD-WCAG20-20040602.html#visual-contrast

--- Signature ---

Michael Cooper
Accessibility Product Manager, Watchfire
1 Hines Rd Suite 200, Kanata, ON  K2K 3C7  Canada
Tel: +1 (613) 599-3888 x4019
Fax: +1 (613) 599-4661
Email: michaelc@watchfire.com
Web: http://www.watchfire.com/
Received on Monday, 21 June 2004 18:11:58 UTC

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