From 40e952a56e0c785e649700303618e261ca6033b7 Mon Sep 17 00:00:00 2001 From: "Patrick H. Lauke" Date: Fri, 29 Sep 2023 14:50:59 +0100 Subject: [PATCH] Remove outdated page-break-navigation --- understanding/22/page-break-navigation.html | 111 -------------------- 1 file changed, 111 deletions(-) delete mode 100644 understanding/22/page-break-navigation.html diff --git a/understanding/22/page-break-navigation.html b/understanding/22/page-break-navigation.html deleted file mode 100644 index 31439cb9a3..0000000000 --- a/understanding/22/page-break-navigation.html +++ /dev/null @@ -1,111 +0,0 @@ - - - - - Understanding Page Break Navigation - - - -

Understanding Page Break Navigation

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Status

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This understanding document is part of the draft WCAG 2.2 content. It may change or be removed before the final WCAG 2.2 is published.

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Page Break Navigation Normative Text

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A

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For web content with page break locators, a mechanism is available to navigate to each locator.

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Definitions:

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page break locators programmatically determinable destination markers that are arranged in a meaningful sequence to determine the location of a page in relation to others in the set.

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Examples would be:

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Intent of Page Break Navigation

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The purpose of this Success Criterion is to let all users locate the same content using page break locators, regardless of whether they use print or digital versions of a publication. This is important to users with disabilities who may transform the information to more easily consume it.

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Page numbering has long been a fundamental way to identify and communicate the location of specific parts of published content. Page numbers are used in references, footnotes, endnotes, bibliographies, and tables of content. Particularly, they are critical in academic and learning environments. When participants use the same edition of a printed book, page numbers provide a means to ensure everyone is "on the same page."

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Digital publishing, while providing greater access to information, threatens the ability for everyone to locate information by page number. This is because screen size and user preferences can alter content. In one implementation, a screen of content may be considered a page, and the pagination may be updated to match the number of screens of content on a specific device. In another, the page numbering may cease to be used at all in a digital version. In either case, a user whose page numbering no longer matches the printed version cannot easily locate information by page number references.

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Digital publishing provides crucial access to content for people who are blind, have low vision, dyslexia or other cognitive disabilities. Such users are likely to adapt content by using a different layout or assistive technology. Providing a mechanism by which users of digital versions can navigate via page numbers, ensures all users can easily reach the same document location.

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The scope of this criterion is web content that is part of a Web page. EPUB can fulfill this definition if it is available to read at a URI. The more common case that is in scope is an EPUB book converted to be read by a web browser.

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In publishing, there can be many different editions of a work, such as a second edition or a paperback edition. There is a requirement (separate from accessibility) for metadata in digital publications like EPUB to identify the edition of the title which a digital version represents. The page break locaters would be aligned with the specified edition.

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Statically paginated formats (such as PDF) where the user agents include a mechanism to navigate by page typically meet this Success Criterion by default. The user agents for the EPUB format also typically provide the navigation mechanism if a page list is included. Web browsers do not have a standard page navigation mechanism, so for HTML content with page break locators it is the author responsibility to add that mechanism.

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For a Page Break Locator to be a "programmatically determinable destination marker", it needs to have a role that identifies it as a page break, and a method of determining which page in a sequence it represents. This Criterion applies to pages which include elements with the doc-pagebreak semantic role and an associated ID attribute. Technique H99 shows how this can be accomplished. This would not apply to an element which visually shows a page number, unless it also has a recognized role. This Success Criterion is also not concerned with how the web page prints out. Mark up to control output for printing, such as CSS page breaks, is not in scope.

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Benefits of Page Break Navigation

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Examples of Page Break Navigation

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Resources

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Techniques for Page Break Navigation

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Sufficient Techniques for Page Break Navigation

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  1. - Provide page list navigation -
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Additional Techniques (Advisory) for Page Break Navigation

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Failures for Page Break Navigation

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