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Re: Is G1 sufficient techbnique forSC 2.4.1?

From: Loretta Guarino Reid <lorettaguarino@google.com>
Date: Mon, 26 Jul 2010 16:14:49 -0700
Message-ID: <AANLkTi=5V_US00eG1nffghbRFJ7Do57oezfBKzge44ti@mail.gmail.com>
To: Sailesh Panchang <spanchang02@yahoo.com>
Cc: public-comments-wcag20@w3.org
On Tue, Jun 15, 2010 at 7:45 PM, Sailesh Panchang <spanchang02@yahoo.com> wrote:
> Hello WG,
> SC 2.4.1 sufficient techniques:
> The doc states any one of techniques G1, G123, G124 are sufficient.
> Assume:
> No structural markup techniques (H50, H69, H70, H64 is used.
> the page has top nav links (repetitive) and left nav links and one main content and footer section.
> The links in the left nav are several and are repetitive  within section of top nav links.
> Issue:
> Does the website comply with SC 2.4.1 if only G1 is implemented?
> How can a screen-reader user skip the top nav links and go to left nav links?
> How will a user make out where top nav links end and left nav begin?
> Comment:
> G1 is alright if page has no left or right side content but just top nav and header section, a main content and footer section.
> Maybe other methods like G123, G124 are more useful here.
> There should be a skip top-nav link with target set at start of left nav and a skip to main content positioned at start of left nav on such pages.
> A lesspreferred method is to have both skip links at page start.
> So please consider if G1, G123, G124 are  substitutes for one another.
> Also should every skip-nav technique require that the  link becomes visible as soon as it gets tab focus so that sighted keyboard-users can benefit from them?It mainly helps this group of users. AT-users often rely on  heading and list markup on pages that are properly marked up.
> Thanks,
> Sailesh Panchang
> Centreville VA
> Tel 571-344-1765
Response from the Working Group
Since SC 2.4.1 only requires that there be a way to skip repeated
contented, G1 is sufficient. Requiring that there be ways to navigate
between repeated sections runs into testability problems in deciding
how to divide the repeated content; this ultimately leads to needing a
way to skip over each link individually.

However, we agree with you that G1 is not the preferred technique when
there are multiple navigation sections, so we have added to the

"This technique is most useful when a Web page has one main content
area, rather than a set of content areas that are equally important,
and when there are not multiple navigation sections on the page."

The test procedures for G1, G123, and G124 all require that the link
either always be visible or be visible when the link acquires focus.
Loretta Guarino Reid, WCAG WG Co-Chair
Gregg Vanderheiden, WCAG WG Co-Chair
Michael Cooper, WCAG WG Staff Contact

On behalf of the WCAG Working Group
Received on Monday, 26 July 2010 23:15:19 UTC

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