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WCAG 4.1.1 through 4.1.3 cover the robustness of the code that makes up your website. It also covers custom elements and scripts to ensure that they are accessible. Finally, it covers status messages and screen reader accessibility.

For all user interface components (including but not limited to: form elements, links and components generated by scripts), the name and role can be programmatically determined; states, properties, and values that can be set by the user can be programmatically set; and notification of changes to these items is available to user agents, including assistive technologies.

Modal dialogues do not count for this criterion. A modal dialogue moves screen reader focus when it appears. It traps keyboard focus inside until the user dismisses it. The message for leaving nyc.gov when going to an external website does not count for this criterion.

Web accessibility depends not only on accessible content but also on accessible Web browsers and other user agents. Authoring tools also have an important role in Web accessibility. For an overview of how these components of Web development and interaction work together, see:

The individuals and organizations that use WCAG vary widely and include Web designers and developers, policy makers, purchasing agents, teachers, and students. In order to meet the varying needs of this audience, several layers of guidance are provided including overall principles, general guidelines, testable success criteria and a rich collection of sufficient techniques, advisory techniques, and documented common failures with examples, resource links and code.

In parallel with WCAG 2.1, the Accessibility Guidelines Working Group is developing another major version of accessibility guidelines. The result of this work is expected to be a more substantial restructuring of web accessibility guidance than would be realistic for dot-releases of WCAG 2. The work follows a research-focused, user-centered design methodology to produce the most effective and flexible outcome, including the roles of content authoring, user agent support, and authoring tool support. This is a multi-year effort, so WCAG 2.1 is needed as an interim measure to provide updated web accessibility guidance to reflect changes on the web since the publication of WCAG 2.0. The Working Group might also develop additional interim versions, continuing with WCAG 2.2, on a similar short timeline to provide additional support while the major version is completed.

The content is available in a closed environment, such as a university or corporate network, where the user agent required by the technology and used by the organization is also accessibility supported;

the purpose cannot be determined from the link and all information of the Web page presented to the user simultaneously with the link (i.e., readers without disabilities would not know what a link would do until they activated it)

hardware and/or software that acts as a user agent, or along with a mainstream user agent, to provide functionality to meet the requirements of users with disabilities that go beyond those offered by mainstream user agents

A CSS pixel is the canonical unit of measure for all lengths and measurements in CSS. This unit is density-independent, and distinct from actual hardware pixels present in a display. User agents and operating systems should ensure that a CSS pixel is set as closely as possible to the CSS Values and Units Module Level 3 reference pixel [css3-values], which takes into account the physical dimensions of the display and the assumed viewing distance (factors that cannot be determined by content authors).

determined by software from author-supplied data provided in a way that different user agents, including assistive technologies, can extract and present this information to users in different modalities

property whose value determines the presentation (e.g. font, color, size, location, padding, volume, synthesized speech prosody) of content elements as they are rendered (e.g. onscreen, via loudspeaker, via braille display) by user agents

This section contains a listing of common user interface component input purposes. The terms below are not keywords that must be used, but instead represent purposes that must be captured in the taxonomy adopted by a webpage. Where applicable, authors mark up controls with the chosen taxonomy to indicate the semantic purpose. This provides the potential for user agents and assistive technologies to apply personalized presentations that can enable more people to understand and use the content.

Important update about Citrix ReceiverBeginning August 2018, Citrix Receiver will be replaced by Citrix Workspace app. While you can still download older versions of Citrix Receiver, new features and enhancements will be released for Citrix Workspace app.

Notes covering prerequisites, fixes, known issues for ForgeRock® Access Management web policy agents. ForgeRock Access Management provides authentication, authorization, entitlement, and federation software.

Web Policy Agent 4.1.1 includes a new environment variable, AM_AGENT_REST_LOGIN, to allow the agent to authenticate to AM servers configured behind a load balancer that does not support session stickiness.

In environments where protected URLs are dynamic, the web agent's policy decision cache may not receive hits on subsequent policy validations. For example, a request to the resource at =true would not match a request for =true&param2=true even though the base URL is the same.

Although this is the expected behavior, Web Policy Agent 4.1.1 includes a new advanced property, org.forgerock.agents.config.policy.rule, that allows the web agent to match an inbound request from an authenticated user against a regular expression stored alongside a policy decision in the policy cache. If there is a match, the web agent replays the policy decision without contacting AM.

Web Policy Agent 4.1 includes a new policy agent that supports NGINX Plus web servers. For more information, see "Web Policy Agents Platform Requirements" and "Installing Web Policy Agents in NGINX Plus" in the Web Policy Agent Guide.

The NGINX Plus policy agent supports regular expressions to improve conditional login URL redirection. For more information, see the Regular Expression Conditional Login URL property on "Configuring Access Management Services Properties" in the Web Policy Agent Guide.

[a] The Apache HTTP Server Project does not offer binary releases for Microsoft Windows. The ForgeRock Apache HTTP Server policy agent for Windows was tested against the binaries offered by Apache Lounge.

Before installing web policy agents on Linux, make sure the system can run gcc 4.4.7. libc.so.6 must be available and it must support the GLIBC_2.3 ABI. You can check this by running the following command: strings libc.so.6 | grep GLIBC_2.

Web Policy Agents on Linux systems require a minimum of 135 megabytes of free disk space at all times. If the amount of free space drops below this threshold, a warning similar to the following appears in the agent.log file:

Before installing the IIS 7 web policy agent on Microsoft IIS 7 or IIS 8, make sure that the optional Application Development component of Web Server (IIS) is installed. In the Windows Server 2012 Server Manager for example, Application Development is a component of Web Server (IIS) | Web Server.

Web Policy Agents on Windows systems require a minimum of 1.07 gigabytes of free disk space at all times. If the amount of free space drops below this threshold, a warning similar to the following appears in the agent.log file:

Earlier versions of the web policy agents used the org.forgerock.agents.config.secure.channel.disable property to determine whether to use OpenSSL or the native Windows libraries for SSL communications.

To show the incoming request URL, set the org.forgerock.agents.config.cdsso.original.url.redirect.param custom property to the name of the query parameter that should contain it, such as, mycustomgoto, and the agent will add the new query parameter to the redirection URL.

The web agent replaces authentication functionality provided by Apache, for example, the mod_auth_* modules. Integration with built-in Apache httpd authentication directives, such as AuthName, FilesMatch, and Require is not supported.

A good way to check the accessibility of a document is to use tools that your readers will use. Even if you do not have access to those tools, Adobe Acrobat provides an automated way to check the accessibility of a PDF file. The Full Check/Accessibility Check feature in Acrobat checks a PDF for many of the characteristics of accessible PDFs. You can choose which accessibility problems to look for and how you want the results reported.

A document author can specify that no part of an accessible PDF is to be copied, printed, extracted, commented on, or edited. This setting could interfere with a screen reader's ability to read the document, because screen readers must be able to copy or extract the document's text to convert it to speech.

If your assistive technology product is registered with Adobe as a Trusted Agent, you can read PDFs that might be inaccessible to another assistive technology product. Acrobat recognizes when a screen reader or other product is a Trusted Agent and overrides security settings that would typically limit access to the content for accessibility purposes. However, the security settings remain in effect for all other purposes, such as to prevent printing, copying, extracting, commenting, or editing text.

Setting the document language in a PDF enables some screen readers to switch to the appropriate language. This check determines whether the primary text language for the PDF is specified. If the check fails, set the language. 2b1af7f3a8