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SC 1.3.2, 2.4.3: Visual Order vs Focus/Reading Order

From: <makoto.ueki@gmail.com>
Date: Thu, 15 Oct 2009 09:39:44 +0000 (GMT)
To: public-comments-wcag20@w3.org
Message-Id: <20091015093944.708A55F76D@stu.w3.org>

Name: Makoto Ueki
Email: makoto.ueki@gmail.com
Affiliation: Infoaxia, Inc.
Document: UW
Item Number: Understanding Success Criterion 2.4.3
Part of Item: Sufficient Techniques
Comment Type: question
Summary of Issue: SC 1.3.2, 2.4.3:  Visual Order vs Focus/Reading Order
Comment (Including rationale for any proposed change):
If focus/reading order don't match the visual order, will it fail these SC?

Visual Order:

Section A, B, C, D

Focus/Reading Order(DOM order):

Section A, C, B, D or C, A, B, D etc.

For example, a web page has main content on the left side and a group of links on the right side. The visual order would be 1)main content and then 2)group of links. If focus(or reading) order is 1)group of links and then 2)main content, will it be a failure for this SC? In this case, the DOM order doesn't match the visual order.

Another example would be a web page which has navigation bar in the header section and main content below the navigation bar. In this case, main content may comes first and then navigation bar may comes next in its focus/reading order when positioning them by using CSS.

These cases don't change meaning of content within each section. But its focus/reading order(DOM order) doesn't match the visual order. It may confuse sighted users who are using only keyboard.

They can't be "true" in "Expected Results" when they are tested by C27 which is one of Sufficient Techniques for both SC.

Would these cases fail both SC 1.3.2 and 2.4.3?

Proposed Change:
Received on Thursday, 15 October 2009 09:39:48 UTC

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