[DRAFT] Why Standards Harmonization is Essential to
Web Accessibility see also general comments in the survey (WBS)
Page Content
- Executive Summary
- Introduction
- Fragmentation [complete]
- Harmonization [complete]
- Using Standards [complete]
Editors' Draft updated: $Date: 2011-06-23$
Status: This document is an in-progress draft and should not be referenced or
quoted under any circumstances. A change log is
available. Please send comments to wai-eo-editors@w3.org
(a publicly archived list). The previous version of this document is
available at www.w3.org/WAI/Policy/harmon.html.
Executive
Summary
In developing policies for
Web accessibility, many regional, national, and local governments have taken
advantage of the broadly accepted worldwide standards[prefer to use
our standard wording, e.g., “widely-recognized international
standard” – odd to use “worldwide” here],
the W3C's Web Content Accessibility
Guidelines (WCAG) 2.0. In doing so, these governments have established a consistent business environment[not quite
makes sense, or overstating “business environment” is so broad, need to narrow
down to related to web accessibility. maybe “for web standards”]
and helped accelerate the overall progress of Web accessibility. At the same
timeHowever, some national and local [see WBS
comment] governments continue to develop their own standards. These
existence
of multiple divergent standards can slow progress toward the goal
of Web accessibility. This paper explores the benefits of harmonizing
international, national, and local approaches to Web accessibility by adopting
or referencing existing international Web
accessibility standards in national and local [see WBS comment] policies.
- Accessibility
of the Web is essential to enable the participation of people with
disabilities in the Information Society.
Accessibility is essential for access to and participation in education,
employment, health care, civic life, and more; and it is a right under the
United Nations Convention on the Rights of Persons with Disabilities. [fyi, in
my first pass, I had suggestions for links here and elsewhere; however, I
do like having the first parts free of links for flow, and
then putting the links in the last section.]
- The
efforts of many different stakeholders are needed to bring about an
accessible Web. Policy makers, browser
developers, authoring tool and evaluation tool developers, website
designers and content creators, and people with disabilities all have a
role to play in achieving accessibility of the Web.
Use of
international Web accessibility standards can help put the goal of an
accessible Web within reach[not real strong], while “standards
fragmentation”—use of divergent national and local [see WBS comment] versions
of Web accessibility standards—can slow potential [don’t need can
and potential (same thing later in doc, too)]progress.
Fragmentation of
standards is
an economic issue for government, businesses, and Web developers.[not so much an
economic issues for developers (same issue later in doc, too)]
Standards fragmentation means that:
- governments
must spend more resources
to develop alternate versions of training and technical support materials;
- international
businesses and other international organizations must track multiple
differing standards, and learn how to apply these
different standards;
- mainstream
authoring tools and evaluation tools may lack supportfor divergent
national or local standards;
- products
developed by local businesses may be less able to find[“find” not strong enough]
an international market;
- interoperability
with assistive technologies and related accessibility standards is reduced, for instance, for electronic publishing
orand online learning.[needs editing to clarify what the for instance applies to]
Harmonization of
standards can
help accelerate the spread of accessibility across the Web[hum, I don’t
really thinkd of accessibility spreading, I think of it improving
across the web]. Standards harmonization means adopting or
referencing freely available[while freely available is an important point, it
dones’t seem to fit well here] international Web accessibility
standards in national and local[see WBS comment] policies, so that:
- policy
makers, accessibility advocates, and industry proponents of Web
accessibility can take advantage of the benefits of years of international
collaboration on the development of WCAG
2.0;
- governments
can save resources by re-using W3C/WAI's extensive, freely available, and
well-tested online technical reference
materials, and education
and trainingmaterials; - software
developers can take advantage of economies of scale created by wider use
of a single standard, which in turn drives the
production of authoring tools, evaluation tools, browsers and media
players that support production and display [jargony] of
accessible content;
- Web
developers and content developers can more easily create accessible
websites and Web content [“websites and Web content”
not smooth. Maybe just web content? Or websites and web applications] by
using authoring and evaluation tools that provide greater support for
production of accessible content;
- more
resources can
thenbe devoted tonational andlocal [see WBS comment. maybe here can just say local and that covers regional governments through to individual organizations?]needs, includingbuildingraising awareness, translatingon ofstandards and technical reference materials,provisionprovidingoftraining, customizatingon oflocal technical support, and developingment ofnational and local evaluation resources — all approaches that can help accelerate progress in Web accessibility.[search throughout for similar edits]
[unbold] More information follows on
the benefits of standards harmonization for Web accessibility, and how to take
advantage of available resources to support national and local [see WBS comment] Web accessibility
progress.
Links to more information are in the _ Using
W3C/WAI Standards and Resources_ section.
Introduction
[see WBS comments & hopefully
EOWG discussion] Worldwide, one billion people worldwide have
significant disabilities. [must
have references for stats. Can put as footnotes (we’ve done that
a few other places on the WAI site] The last decade has witnessed
a remarkable expansion in the number of people who have access to information
on the World Wide Web, with 28% of the world’s population now using the Web.[so many of the
target audience are operating in an environment where the percentage is 8much*
higher so I think the 28% is counter productive] The United
Nations Convention on Rights of Persons with Disabilities identifies equal
access to information as an essential right. Currently, for people with
disabilities, the Web may not be so easily accessed, if at all.[edit – see other
wording which is nicer :] Without accessible websites, people with
a diverse range of hearing, movement, sight, and cognitive abilities may
encounter barriers when going abouttrying to complete
essential tasks on the Web.[weave link to business case into lower section to
support & expound on this]
Tim Berners-Lee
created the World Wide Web with a vision of broad access to information. This vision has evolved into one of
the World Wide Web Consortium’s (W3C) primary goals -- ensuring that the
benefits of the Web are available to all people, whatever their language,
abilities, or Web access devices may be. A core aspect of W3C's work has been
the Web Accessibility Initiative (WAI), helping lead the Web to its full
potential, which includes enabling people with disabilities to participate
equally on the Web.
Web accessibility
means that people with disabilities can perceive, understand, navigate, and
interact with the Web. This interaction includes contributing to the Web. Web accessibility
also benefits others, including older people with changing abilities due to
aging.; yYet,
currently most Web sites and Web software have accessibility barriers that make
it difficult or impossible for many people with
disabilities to use the Web.[this nicer wording for what is above]
W3C’s Web Content
Accessibility Guidelines (WCAG) 2.0 is recognized as the world’s leading international standard
for accessibility of Web content [maybe websites and web applications]. WCAG 2.0 states is organized
around four key principles of Web accessibility:[note that if
you replace these next two sections with the WCAg at a Glance, then the
subpoints explain the principles and you might not need to add descriptions]
- Perceivable
- Information and user interface components must be presentable to users
in ways they can perceive.
- Operable
- User interface components and navigation must be operable.
- Understandable
- Information and the operation of the user
interface must be understandable.
- Robust
- Content must be robust enough that it can be interpreted reliably by a
wide variety of user agents, including assistive technologies, now and
in the future.
In addition to these
fundamental principles, WCAG 2.0 includes guidelines and success criteria,
which address provisions such as the following:
- images
should include equivalent alternative text in the markup;
- all
functions
on a websiteshould be available from a keyboard; - websites
should give users enough time to read and use content;
- multimedia
content should have transcripts or captions. [still
not entirely comfortable with this – looking forward to EOWG discussion]
WCAG 2.0 is further
supported by a substantial library of
implementation techniques, and training and educational resources.
Two companion standards supplement WCAG 2.0[see WBS for overall comment.]:
the Authoring Tool Accessibility Guidelines (ATAG) 2.0, which help in
the creation of developer and evaluation tools for accessible Web content, and
the User Agent Accessibility Guidelines (UAAG)1.0,
which guide the development of browsers, media players, and interoperability
with assistive technologies.[consider using wording from overview pages. “help
in the creation of” not real smooth. And “guide the development of” could be
stronger] Accessible Rich Internet Applications (WAI-ARIA) provides
techniques for addresses
accessibility of dynamic web content to meet WCAG.[to show that
they are complimentary :-] Together, these standards define the
path to an accessible Web.
Fragmentation
Concerns with Web Accessibility Standards
Fragmentation of
standards is an economic and social issue for government, businesses, and Web
developers [earlier comment]
that arises when national or local governments or organizations
develop standards that diverge from international guidelinesstandards.
Fragmentation of standards can slow potential progress towards increasing
accessibility of the Web for people with disabilities.
In some cases,
divergent standards arise are created when a
national government commissions the development of wholly new standards, though more often divergent
standards result from modification of existing standards. Sometimes local standards combine
two or more accessibility provisions, or omit or add provisions. However, For example, a
local standards group might changinge
the wording of individual provisions of WCAG can result in , in turnunintentionally
changing altering the technical meaning of the
provision. This
In all of these cases, the divergent standards makes
conformance difficult for content creators and Web developers , especially
those who may also need to comply with existing
international standardsother guidelines. Alternatively, local standards
may combine two or more accessibility provisions, or omit or add provisions. In each case,
it changes what content creators and Web developers must conform to.
Fragmentation may
be driven by a number of factors. These may include Sometime it is the
perspective that only locally-developed guidelines can meet the needs of the
local disability or business communities, despite broad international
participation in development of WAI standardsguidelines[this to avoid
confusion, would be good to use standards here & everywhere like it,
instead of guidelines]. Other drivers timesit is of
fragmentation may include the perspective that local funding
should be invested in local guidelines, misunderstandings about how to adopt or
reference W3C standards, or unfamiliarity with mechanisms for producingthe
availability of aAuthorized tTranslations
of W3C standards.
Fragmentation
affects the economy and society in multiple ways:
- Governments
must spend more resources to develop alternate versions of
trainingeducation and technical support materials. This expenditure duplicates the already extensive set of materials created by W3C, and mayleave lesstake resources away fromavailable toexpanding and improvingeexisting materials.[edit[ - International
organizations -- including businesses and non-governmental organizations
-- must track and support multiple differing standards,
whileand Web developers and content creators must learn how to apply these different standards. - Mainstream
authoring tools and evaluation tools may lack support for divergent
national or local standards.
With a dearth of tools to support development and testing of accessible
Web sites, production of accessible content remains slow. [??? Not sure
the point here, but I surely read it wrong]
- Products
developed by local businesses may be less able to
findcompete in an international market. Buyers typically select technology products with the broadest possible range of uses. A locally developed product that does not conform to accepted international standards will likely struggle in the market. - Interoperability
with assistive technologies and related accessibility standards may be
reduced. Many people with disabilities
rely on assistive technologies,
such as[want to be able to put “and more” at the end since this is such a small list] including screen readers, screen magnifiers, voice recognition, and more.orscreen magnifiersDivergent standards may limit interoperability between websites and assistive technologies, reducing access to websites for people with disabilities.
Policy -makers
are in a position to help guide the selection of Web accessibility standards. Governments typically want to
develop and implement policies that benefit all sectors of the public, as well
as the economy. Policy makers may wish [too wimpy. maybe “would be wise”]
to consider whether the development of divergent local
accessibility guidelines may inhibit achievement of these objectives.
Why
Standards Harmonization Helps Web Accessibility
Harmonization of
standards can help accelerate the spread of accessibility [see earlier comment about this
wording] across the Web. Standards harmonization means adopting or
referencing freely [see earlier comment about this wording] available
international Web accessibility standards in national and local [see WBS comment] policies.
In the harmonization process, when an organizationa national or
local government adopts WCAG 2.0 and it then has access
to an extensive
library of
supporting implementation techniques. They can also add their own
implementation techniques, and can, if they wish, share their new techniques with
W3C/WAI for others to use.[want to say for consideration to be included in
updated… naw, probably too complex].
- Policy
makers, accessibility advocates, and industry proponents of Web
accessibility can take advantage of years of international collaboration
on the development of WCAG 2.0.
Harmonization enables Web developers to learn one consistent set of
guidelines and implementation techniques well, rather than needing to
learn many different guidelines.
- Governments
can save resources by re-using W3C/WAI's extensive, freely available, and
well-tested online technical reference materials
,and educationand trainingmaterials.Instead, tThey can use their resources forbuildingraising awareness, translating standards and technical reference materials, providing training, customizing local technical support, and developing national and local evaluation resources.[see earlier comments] All of these activities help accelerate progress in Web accessibility. - Software
developers can take advantage of economies
of scale[tto jargon?] created by wider
use of a single standard, which in turn drives the production of authoring
tools, evaluation tools, browsers and media players that support production
and display of accessible content.
[good!
à]Tool developers face competing
priorities when deciding which features to build into their software.
Harmonized standards mean a more unified customer demand, which
strengthens the business case for accessibility and helps tip the balance
towards implementation of more accessibility features in their products.
Tools that conform to the Authoring Tool Accessibility Guidelines 1.0
(ATAG 1.0) can
streamlinesimplify the process of creating accessible Web sites, and therefore become a key [I wouldn’t use “driver” in a prositive way here since it has throughout the doc you say “fragmentation driver” so I associate that word with negative]driverfactor in improving theof Webaccessibility of the web – if there are consistent accessibility standards to support across different markets. - Web
developers and content developers can more easily create accessible
websites and Web content [see previous comments] by using
authoring and evaluation tools that provide greater support for production
of accessible content. Harmonizing standards across
browsers and authoring tools is mutually reinforcing, creating an overall
benefit to the creation of accessible content. When a browser implements
Web accessibility features, authoring tool developers have more reason to
provide authoring support for those features. Similarly, browser
developers are influenced by what authoring tools support, and are more
likely to implement accessibility features once they know that authoring
tools will provide the relevant authoring support.[edit. See Components for
ideas for wording – also the content author/develoer really place the
most influential role in the chicken & egg
;-]]
Using W3C/WAI Standards, and Technical and Educational Resources
To support harmonization and
avoid standards fragmentation, the W3C and WAI have created a wide
array range of
freely
available technical and educational resources that are freely available and help
support harmonization and avoid standards fragmentation. Take
advantage of years of development work by following these steps when adopting
or referencing W3C/WAI standards within national and local [see WBS comment] policies:
1. Engage with national and local[see WBS comment] stakeholders.
Build a strong foundation
for wide adoption of accessibility standards by ensuring the involvement of all
interested parties from the beginning - people from government, industry,
disability organizations, research, education, others - to build a commitment
to shared goals.
2. Take advantage of existing resources.
Let stakeholders know about
W3C/WAI standards that you can freely reuse. Check before recreating
standards
and supporting, and technical and educational
resources,
that may already exist in forms that meet national and local needs.
- Use
the W3C's complementary
Web accessibility standards—for Web content and websites (WCAG),
for authoring tools (ATAG),
and for browsers and media
players (UAAG) -- to improve efficiency
and internationalization. These three standards were developed to work
together and greatly improve interoperability.
- License
standards for free.[ß make it sound like they should license the
stds???] [point to Using WAI Material < http://www.w3.org/WAI/about/usingWAImaterial.html>
instead of ->] The W3C
document license allows free reusability of standards and supporting
technical and educational material with proper acknowledgement of source.
The accompanying FAQ may
address your questions; if not, please let us
know.
- Leverage
the implementation support techniques that accompany each W3C/WAI
standard. For instance, the How to Meet WCAG 2.0
customizable checklist links to Techniques for WCAG 2.0,
which include general implementation techniques as well as techniques for
HTML, XHTML, CSS, Scripting, SMIL, Text, ARIA, Flash, PDF, and
Silverlight.
- Adopt
standards at a conformance level that meets
national or local[see WBS comment] your specific needs. Three different conformance levels allow adoption or referencing of W3C/WAI standards at levels supporting different degrees of accessibility.Typically, policies reference WCAG 2.0 AA, which includes success criteria levels A and AA, to provide an effective level of accessibility support. AAA is infrequently used as a required conformance level.WAI recommends meeting at least all WCAG 2.0 Level A and AA success criteria. [from http://www.w3.org/WAI/older-users/developing.html] (Note that it is not recommended that Level AAA conformance be required as a general policy for entire sites because it is not possible to satisfy all Level AAA Success Criteria for some content.)[from WCAG itself] - Maximize
translation capacity[<- huh? Don’t understand]
since many W3C/WAI documents have already been
translated into different languages. The Policy for Authorized
W3C Translations can be used for translating additional W3C/WAI
technical reports as needed. [point to WCAG 2 Translations page]
- Many
W3C/WAI presentation and
training resources [change link to http://www.w3.org/WAI/train.html
(up a level so they get some actual presentations
and training materials instead of the outlines
only]
resourcesare extensible, and can be freely adapted to meet national or local needs.
3. Use W3C/WAI standards, technical and educational
resources as needed, acknowledging the source.
Determine what is needed
for your national, local, or organizational policy, including the conformance
level and timelines for the standards that you plan to adopt or reference.
Follow the W3C
Document License[Using WAI material is easier! :-] to acknowledge the source.
- [bullets
need work – and probably expanding some]
- Develop
PrepareaAuthorized Ttranslations of WAI standards, if they are not already available.of key resources if needed.Translate supporting material as needed. - Consider
adapting
WAI education
and trainingresources or developing additional resources to meet your specific needs.that may need to be adapted or developed on the national or local level.
4. Contact or participate with W3C/WAI as needed
and/or interested.
WAI welcomes,
encourages, and values[too much]
the active participation of individuals and organizations around the world to
collaborate in activities that help improve accessibility of the web.
- [bullets
nebelow need work but I am so totally out of steam!]
- Note
the multiple resources
for addressing technical questions. Send questions related to
referencing of WAI standards to WAI staff.
- Share
technical and educational resources that you develop with the broader Web
accessibility community, for instance by using the WCAG 2.0 Techniques
submissions process.
- Explore
information on multiple ways to get involved with WAI,
for instance by receiving announcements, providing feedback on documents,
or joining WAI working groups.