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flex-lg-items-center js-details-container js-header-menu-item"> <button type="button" class="HeaderMenu-link border-0 width-full width-lg-auto px-0 px-lg-2 py-lg-2 no-wrap d-flex flex-items-center flex-justify-between js-details-target" aria-expanded="false"> Product <svg opacity="0.5" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-chevron-down HeaderMenu-icon ml-1"> <path d="M12.78 5.22a.749.749 0 0 1 0 1.06l-4.25 4.25a.749.749 0 0 1-1.06 0L3.22 6.28a.749.749 0 1 1 1.06-1.06L8 8.939l3.72-3.719a.749.749 0 0 1 1.06 0Z"></path> </svg> </button> <div class="HeaderMenu-dropdown dropdown-menu rounded m-0 p-0 pt-2 pt-lg-4 position-relative position-lg-absolute left-0 left-lg-n3 pb-2 pb-lg-4 d-lg-flex flex-wrap dropdown-menu-wide"> <div class="HeaderMenu-column px-lg-4 border-lg-right mb-4 mb-lg-0 pr-lg-7"> <div class="border-bottom pb-3 pb-lg-0 border-lg-bottom-0"> <ul class="list-style-none f5" > <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" data-analytics-event="{"location":"navbar","action":"github_copilot","context":"product","tag":"link","label":"github_copilot_link_product_navbar"}" href="https://github.com/features/copilot"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-copilot color-fg-subtle mr-3"> <path d="M23.922 16.992c-.861 1.495-5.859 5.023-11.922 5.023-6.063 0-11.061-3.528-11.922-5.023A.641.641 0 0 1 0 16.736v-2.869a.841.841 0 0 1 .053-.22c.372-.935 1.347-2.292 2.605-2.656.167-.429.414-1.055.644-1.517a10.195 10.195 0 0 1-.052-1.086c0-1.331.282-2.499 1.132-3.368.397-.406.89-.717 1.474-.952 1.399-1.136 3.392-2.093 6.122-2.093 2.731 0 4.767.957 6.166 2.093.584.235 1.077.546 1.474.952.85.869 1.132 2.037 1.132 3.368 0 .368-.014.733-.052 1.086.23.462.477 1.088.644 1.517 1.258.364 2.233 1.721 2.605 2.656a.832.832 0 0 1 .053.22v2.869a.641.641 0 0 1-.078.256ZM12.172 11h-.344a4.323 4.323 0 0 1-.355.508C10.703 12.455 9.555 13 7.965 13c-1.725 0-2.989-.359-3.782-1.259a2.005 2.005 0 0 1-.085-.104L4 11.741v6.585c1.435.779 4.514 2.179 8 2.179 3.486 0 6.565-1.4 8-2.179v-6.585l-.098-.104s-.033.045-.085.104c-.793.9-2.057 1.259-3.782 1.259-1.59 0-2.738-.545-3.508-1.492a4.323 4.323 0 0 1-.355-.508h-.016.016Zm.641-2.935c.136 1.057.403 1.913.878 2.497.442.544 1.134.938 2.344.938 1.573 0 2.292-.337 2.657-.751.384-.435.558-1.15.558-2.361 0-1.14-.243-1.847-.705-2.319-.477-.488-1.319-.862-2.824-1.025-1.487-.161-2.192.138-2.533.529-.269.307-.437.808-.438 1.578v.021c0 .265.021.562.063.893Zm-1.626 0c.042-.331.063-.628.063-.894v-.02c-.001-.77-.169-1.271-.438-1.578-.341-.391-1.046-.69-2.533-.529-1.505.163-2.347.537-2.824 1.025-.462.472-.705 1.179-.705 2.319 0 1.211.175 1.926.558 2.361.365.414 1.084.751 2.657.751 1.21 0 1.902-.394 2.344-.938.475-.584.742-1.44.878-2.497Z"></path><path d="M14.5 14.25a1 1 0 0 1 1 1v2a1 1 0 0 1-2 0v-2a1 1 0 0 1 1-1Zm-5 0a1 1 0 0 1 1 1v2a1 1 0 0 1-2 0v-2a1 1 0 0 1 1-1Z"></path> </svg> <div> <div class="color-fg-default h4">GitHub Copilot</div> Write better code with AI </div> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" data-analytics-event="{"location":"navbar","action":"security","context":"product","tag":"link","label":"security_link_product_navbar"}" href="https://github.com/features/security"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-shield-check color-fg-subtle mr-3"> <path d="M16.53 9.78a.75.75 0 0 0-1.06-1.06L11 13.19l-1.97-1.97a.75.75 0 0 0-1.06 1.06l2.5 2.5a.75.75 0 0 0 1.06 0l5-5Z"></path><path d="m12.54.637 8.25 2.675A1.75 1.75 0 0 1 22 4.976V10c0 6.19-3.771 10.704-9.401 12.83a1.704 1.704 0 0 1-1.198 0C5.77 20.705 2 16.19 2 10V4.976c0-.758.489-1.43 1.21-1.664L11.46.637a1.748 1.748 0 0 1 1.08 0Zm-.617 1.426-8.25 2.676a.249.249 0 0 0-.173.237V10c0 5.46 3.28 9.483 8.43 11.426a.199.199 0 0 0 .14 0C17.22 19.483 20.5 15.461 20.5 10V4.976a.25.25 0 0 0-.173-.237l-8.25-2.676a.253.253 0 0 0-.154 0Z"></path> </svg> <div> <div class="color-fg-default h4">Security</div> Find and fix vulnerabilities </div> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" data-analytics-event="{"location":"navbar","action":"actions","context":"product","tag":"link","label":"actions_link_product_navbar"}" href="https://github.com/features/actions"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-workflow color-fg-subtle mr-3"> <path d="M1 3a2 2 0 0 1 2-2h6.5a2 2 0 0 1 2 2v6.5a2 2 0 0 1-2 2H7v4.063C7 16.355 7.644 17 8.438 17H12.5v-2.5a2 2 0 0 1 2-2H21a2 2 0 0 1 2 2V21a2 2 0 0 1-2 2h-6.5a2 2 0 0 1-2-2v-2.5H8.437A2.939 2.939 0 0 1 5.5 15.562V11.5H3a2 2 0 0 1-2-2Zm2-.5a.5.5 0 0 0-.5.5v6.5a.5.5 0 0 0 .5.5h6.5a.5.5 0 0 0 .5-.5V3a.5.5 0 0 0-.5-.5ZM14.5 14a.5.5 0 0 0-.5.5V21a.5.5 0 0 0 .5.5H21a.5.5 0 0 0 .5-.5v-6.5a.5.5 0 0 0-.5-.5Z"></path> </svg> <div> <div class="color-fg-default h4">Actions</div> Automate any workflow </div> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" data-analytics-event="{"location":"navbar","action":"codespaces","context":"product","tag":"link","label":"codespaces_link_product_navbar"}" href="https://github.com/features/codespaces"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-codespaces color-fg-subtle mr-3"> <path d="M3.5 3.75C3.5 2.784 4.284 2 5.25 2h13.5c.966 0 1.75.784 1.75 1.75v7.5A1.75 1.75 0 0 1 18.75 13H5.25a1.75 1.75 0 0 1-1.75-1.75Zm-2 12c0-.966.784-1.75 1.75-1.75h17.5c.966 0 1.75.784 1.75 1.75v4a1.75 1.75 0 0 1-1.75 1.75H3.25a1.75 1.75 0 0 1-1.75-1.75ZM5.25 3.5a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h13.5a.25.25 0 0 0 .25-.25v-7.5a.25.25 0 0 0-.25-.25Zm-2 12a.25.25 0 0 0-.25.25v4c0 .138.112.25.25.25h17.5a.25.25 0 0 0 .25-.25v-4a.25.25 0 0 0-.25-.25Z"></path><path d="M10 17.75a.75.75 0 0 1 .75-.75h6.5a.75.75 0 0 1 0 1.5h-6.5a.75.75 0 0 1-.75-.75Zm-4 0a.75.75 0 0 1 .75-.75h.5a.75.75 0 0 1 0 1.5h-.5a.75.75 0 0 1-.75-.75Z"></path> </svg> <div> <div class="color-fg-default h4">Codespaces</div> Instant dev environments </div> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" data-analytics-event="{"location":"navbar","action":"issues","context":"product","tag":"link","label":"issues_link_product_navbar"}" href="https://github.com/features/issues"> <svg 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<path d="M10.3 6.74a.75.75 0 0 1-.04 1.06l-2.908 2.7 2.908 2.7a.75.75 0 1 1-1.02 1.1l-3.5-3.25a.75.75 0 0 1 0-1.1l3.5-3.25a.75.75 0 0 1 1.06.04Zm3.44 1.06a.75.75 0 1 1 1.02-1.1l3.5 3.25a.75.75 0 0 1 0 1.1l-3.5 3.25a.75.75 0 1 1-1.02-1.1l2.908-2.7-2.908-2.7Z"></path><path d="M1.5 4.25c0-.966.784-1.75 1.75-1.75h17.5c.966 0 1.75.784 1.75 1.75v12.5a1.75 1.75 0 0 1-1.75 1.75h-9.69l-3.573 3.573A1.458 1.458 0 0 1 5 21.043V18.5H3.25a1.75 1.75 0 0 1-1.75-1.75ZM3.25 4a.25.25 0 0 0-.25.25v12.5c0 .138.112.25.25.25h2.5a.75.75 0 0 1 .75.75v3.19l3.72-3.72a.749.749 0 0 1 .53-.22h10a.25.25 0 0 0 .25-.25V4.25a.25.25 0 0 0-.25-.25Z"></path> </svg> <div> <div class="color-fg-default h4">Code Review</div> Manage code changes </div> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" data-analytics-event="{"location":"navbar","action":"discussions","context":"product","tag":"link","label":"discussions_link_product_navbar"}" href="https://github.com/features/discussions"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-comment-discussion color-fg-subtle mr-3"> <path d="M1.75 1h12.5c.966 0 1.75.784 1.75 1.75v9.5A1.75 1.75 0 0 1 14.25 14H8.061l-2.574 2.573A1.458 1.458 0 0 1 3 15.543V14H1.75A1.75 1.75 0 0 1 0 12.25v-9.5C0 1.784.784 1 1.75 1ZM1.5 2.75v9.5c0 .138.112.25.25.25h2a.75.75 0 0 1 .75.75v2.19l2.72-2.72a.749.749 0 0 1 .53-.22h6.5a.25.25 0 0 0 .25-.25v-9.5a.25.25 0 0 0-.25-.25H1.75a.25.25 0 0 0-.25.25Z"></path><path d="M22.5 8.75a.25.25 0 0 0-.25-.25h-3.5a.75.75 0 0 1 0-1.5h3.5c.966 0 1.75.784 1.75 1.75v9.5A1.75 1.75 0 0 1 22.25 20H21v1.543a1.457 1.457 0 0 1-2.487 1.03L15.939 20H10.75A1.75 1.75 0 0 1 9 18.25v-1.465a.75.75 0 0 1 1.5 0v1.465c0 .138.112.25.25.25h5.5a.75.75 0 0 1 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2h16.5c.966 0 1.75.784 1.75 1.75v16.5A1.75 1.75 0 0 1 20.25 22H3.75A1.75 1.75 0 0 1 2 20.25Zm1.75-.25a.25.25 0 0 0-.25.25v16.5c0 .138.112.25.25.25h16.5a.25.25 0 0 0 .25-.25V3.75a.25.25 0 0 0-.25-.25Z"></path> </svg> <div> <div class="color-fg-default h4">Code Search</div> Find more, search less </div> </a></li> </ul> </div> </div> <div class="HeaderMenu-column px-lg-4"> <div class="border-bottom pb-3 pb-lg-0 border-lg-bottom-0 border-bottom-0"> <span class="d-block h4 color-fg-default my-1" id="product-explore-heading">Explore</span> <ul class="list-style-none f5" aria-labelledby="product-explore-heading"> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"all_features","context":"product","tag":"link","label":"all_features_link_product_navbar"}" href="https://github.com/features"> All features </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative 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for production of August 2016 review versions\u003c/h1\u003e\u003ca id=\"user-content-wcag-web-content-accessibility-guidelines---branch-for-production-of-august-2016-review-versions\" class=\"anchor\" aria-label=\"Permalink: WCAG (Web Content Accessibility Guidelines) - Branch for production of August 2016 review versions\" href=\"#wcag-web-content-accessibility-guidelines---branch-for-production-of-august-2016-review-versions\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003ePlease use this branch as the target for pull requests until July 10, 2016.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThis repository is used to develop content for WCAG 2, as well as associated understanding documents and techniques.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eEditorial style guide\u003c/h2\u003e\u003ca id=\"user-content-editorial-style-guide\" class=\"anchor\" aria-label=\"Permalink: Editorial style guide\" href=\"#editorial-style-guide\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e@@To complete\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eAvoid use of RFC2119 terms such as \"must\", \"shall\", or \"may\" in non-normative content, to avoid confusion with normative role.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eSee also: \u003ca href=\"https://github.com/w3c/wcag/wiki/WCAG-2-style-guide\"\u003eWCAG 2 Style Guide\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eFile Structure\u003c/h2\u003e\u003ca id=\"user-content-file-structure\" class=\"anchor\" aria-label=\"Permalink: File Structure\" href=\"#file-structure\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eWCAG 2.0 was maintained in a different file structure than subsequent versions of WCAG. Source files for WCAG 2.0 are in the wcag20 folder and exists primarily for archival purposes. Do not edit content in that folder.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eContent for WCAG 2.1 and later is organized according to the file structure below. The WCAG repository contains source and auxiliary files for WCAG 2, Understanding WCAG 2, and eventually techniques. It also contains auxiliary files that support automated formatting of the document. To facilitate multi-party editing, each success criterion is in a separate file, consisting of a HTML fragment that can be included into the main guidelines. Key files include:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eguidelines/index.html\u003c/code\u003e - the main guidelines file\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eguidelines/sc/{version}/*.html\u003c/code\u003e - files for each success criterion\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eguidelines/terms/{version}/*.html\u003c/code\u003e - files for each definition\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eunderstanding/{version}/*.html\u003c/code\u003e - understanding files for each success criterion\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ewcag20/\u003c/code\u003e was used by a previous version of WCAG, so anything ending .xml is no longer used, \u003cem\u003edo not update\u003c/em\u003e.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eWhere \u003ccode\u003e{version}\u003c/code\u003e is \"20\", content came from WCAG 2.0. \"21\" is used for content introduced in WCAG 2.1, \"22\" for WCAG 2.2, etc.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eBuild System\u003c/h2\u003e\u003ca id=\"user-content-build-system\" class=\"anchor\" aria-label=\"Permalink: Build System\" href=\"#build-system\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe Techniques and Understanding documents are processed through a build system based on Eleventy and Liquid for templating and Cheerio for transformations.\nMore details, including instructions for previewing the output locally, can be found in the \u003ca href=\"/w3c/wcag/blob/main/11ty/README.md\"\u003ebuild process README\u003c/a\u003e.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eEditing Draft Success Criteria\u003c/h2\u003e\u003ca id=\"user-content-editing-draft-success-criteria\" class=\"anchor\" aria-label=\"Permalink: Editing Draft Success Criteria\" href=\"#editing-draft-success-criteria\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://www.w3.org/WAI/GL/wiki/SC_Managers_Phase1\" rel=\"nofollow\"\u003eSuccess Criteria Managers\u003c/a\u003e will prepare candidate success criteria, ready for inclusion in the guidelines document. To prepare success criteria, follow these steps:\u003c/p\u003e\n\u003col dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://help.github.com/articles/cloning-a-repository/\"\u003eClone the repository\u003c/a\u003e, using the URI \u003ca href=\"https://github.com/w3c/wcag.git\"\u003ehttps://github.com/w3c/wcag.git\u003c/a\u003e to clone.\u003c/li\u003e\n\u003cli\u003eSwitch to the working branch for the proposal, which is named for the shortname of the draft success criterion and the issue number, concatenated together.\u003c/li\u003e\n\u003cli\u003eFind the appropriate file for the success criterion in the guidelines/sc/21 folder, named the same as the start of the branch name, and open in an HTML-capable editor. Do the same with any definitions referenced by the success criterion, in the guidelines/terms/21 folder.\u003c/li\u003e\n\u003cli\u003eOpen the guidelines/index.html file and remove comment marks around the lines that reference the success criterion and terms you have edited..\u003c/li\u003e\n\u003cli\u003eFollow the \u003ca href=\"#user-content-success-criteria-format\"\u003esuccess criteria format\u003c/a\u003e below to create the SC content.\u003c/li\u003e\n\u003cli\u003eSave the file and commit the change. NOTE: It is important to also add a suitable 'commit message'. In the comments, reference the issue number from which the proposal was developed starting with a hash, e.g., \u003ccode\u003e#1\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eWhen the success criterion is ready for Working Group review, inform the chairs. Once the proposal has been accepted by the Working Group, the editors will merge the working branch into the main branch, which puts it in the editors' draft and eventual Technical Report publication.\u003c/li\u003e\n\u003c/ol\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eSuccess Criteria Format\u003c/h3\u003e\u003ca id=\"user-content-success-criteria-format\" class=\"anchor\" aria-label=\"Permalink: Success Criteria Format\" href=\"#success-criteria-format\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSuccess criteria use a simple structure of HTML elements, with a few class attribute values, to ensure consistency. Enhancement scripts and style key off this structure. Content you provide is indicated in braces. Items after comments are optional.\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-text-html-basic notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"\u0026lt;section class=\u0026quot;sc\u0026quot;\u0026gt;\n\t\u0026lt;h4\u0026gt;{SC Handle}\u0026lt;/h4\u0026gt;\n\t\u0026lt;p class=\u0026quot;conformance-level\u0026quot;\u0026gt;{Level}\u0026lt;/p\u0026gt;\n\t\u0026lt;p class=\u0026quot;change\u0026quot;\u0026gt;{Change}\u0026lt;/p\u0026gt;\n\t\u0026lt;p\u0026gt;{Main SC Text}\u0026lt;/p\u0026gt;\n\t\u0026lt;!-- if SC has sub-points --\u0026gt;\n\t\u0026lt;dl\u0026gt;\n\t\t\u0026lt;dt\u0026gt;{Point Handle}\u0026lt;/dt\u0026gt;\n\t\t\u0026lt;dd\u0026gt;{Point Text}\u0026lt;/dd\u0026gt;\n\t\u0026lt;/dl\u0026gt;\n\t\u0026lt;!-- if SC has notes --\u0026gt;\n\t\u0026lt;p class=\u0026quot;note\u0026quot;\u0026gt;{Note}\u0026lt;/p\u0026gt;\n\u0026lt;/section\u0026gt;\"\u003e\u003cpre\u003e\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003esection\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eclass\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003esc\u003c/span\u003e\"\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n\t\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003eh4\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e{SC Handle}\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003eh4\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n\t\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ep\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eclass\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003econformance-level\u003c/span\u003e\"\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e{Level}\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ep\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n\t\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ep\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eclass\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003echange\u003c/span\u003e\"\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e{Change}\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ep\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n\t\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ep\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e{Main SC Text}\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ep\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n\t\u003cspan class=\"pl-c\"\u003e\u0026lt;!-- if SC has sub-points --\u0026gt;\u003c/span\u003e\n\t\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003edl\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n\t\t\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003edt\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e{Point Handle}\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003edt\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n\t\t\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003edd\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e{Point Text}\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003edd\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n\t\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003edl\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n\t\u003cspan class=\"pl-c\"\u003e\u0026lt;!-- if SC has notes --\u0026gt;\u003c/span\u003e\n\t\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ep\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eclass\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003enote\u003c/span\u003e\"\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e{Note}\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ep\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003esection\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eNote you do not provide the SC number. Numbers will be assigned, and most likely automatically generated, later.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eValues you provide are described below. Refer to \u003ca href=\"https://www.w3.org/TR/WCAG20/#time-limits-required-behaviors\" rel=\"nofollow\"\u003eSuccess Criterion 2.2.1\u003c/a\u003e for an example of each of these pieces of content.\u003c/p\u003e\n\u003cdl\u003e\n\t\u003cdt\u003e{SC Handle}\u003c/dt\u003e\n\t\u003cdd\u003eThe short name of the SC. In SC 2.2.1 this is \"Timing Adjustable\".\u003c/dd\u003e\n\t\u003cdt\u003e{Level}\u003c/dt\u003e\n\t\u003cdd\u003eThe conformance level of the SC. Values can be \"A\", \"AA\", or \"AAA\". Do not include the word \"Level\".\u003c/dd\u003e\n\t\u003cdt\u003e{Change}\u003c/dt\u003e\n\t\u003cdd\u003eIndicate whether the SC is unchanged from WCAG 2.0, changed, or new. Values can be \"Unchanged\", \"Changed\", or \"New\".\u003c/dd\u003e\n\t\u003cdt\u003e{Main SC Text}\u003c/dt\u003e\n\t\u003cdd\u003eThe main text of the SC, or the starting paragraph. In SC 2.2.1 this is the content that begins \"For each time limit...\".\u003c/dd\u003e\n\t\u003cdt\u003e{Point Handle}\u003c/dt\u003e\n\t\u003cdd\u003eIf the SC has bullets, each bullet has a handle. In SC 2.2.1 the first bullet point handle is \"Turn off\".\u003c/dd\u003e\n\t\u003cdt\u003e{Point Text}\u003c/dt\u003e\n\t\u003cdd\u003eThe content of the bullet. In SC 2.2.1 the first bullet point text begins \"The user is allowed...\".\u003c/dd\u003e\n\t\u003cdt\u003e{Note}\u003c/dt\u003e\n\t\u003cdd\u003eIf there is a note to the SC, provide it after the other content (without the starter \"Note\"). In SC 2.2.1, this is the content that begins \"This success criterion...\". If there is more than one note, multiple `\u003cp dir=\"auto\"\u003e`elements may be provided.\u003c/p\u003e\u003c/dd\u003e\n\u003c/dl\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eDefinitions\u003c/h3\u003e\u003ca id=\"user-content-definitions\" class=\"anchor\" aria-label=\"Permalink: Definitions\" href=\"#definitions\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIf you are providing term definitions along with your SC, include them in the respective \u003ccode\u003eguidelines/terms/{version}\u003c/code\u003e directory, one-per-file, using the following format:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-text-html-basic notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"\u0026lt;dt\u0026gt;\u0026lt;dfn id=\u0026quot;dfn-{shortname}\u0026quot;\u0026gt;{Term}\u0026lt;/dfn\u0026gt;\u0026lt;/dt\u0026gt;\n\u0026lt;dd\u0026gt;{Definition}\u0026lt;/dd\u0026gt;\"\u003e\u003cpre\u003e\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003edt\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003edfn\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eid\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003edfn-{shortname}\u003c/span\u003e\"\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e{Term}\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003edfn\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003edt\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003edd\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e{Definition}\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003edd\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe \u003ccode\u003edfn\u003c/code\u003e element tells the script that this is a term and causes special styling and linking features. To link to a term, use an \u003ccode\u003e\u0026lt;a\u0026gt;\u003c/code\u003e element without an \u003ccode\u003ehref\u003c/code\u003e attribute; if the link text is the same as the term, the link will be correctly generated. For example, if there is a term \u003ccode\u003e\u0026lt;dfn\u0026gt;web page\u0026lt;/dfn\u0026gt;\u003c/code\u003e on the page, a link in the form of \u003ccode\u003e\u0026lt;a\u0026gt;web page\u0026lt;/a\u0026gt;\u003c/code\u003e will result in a proper link.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eIf the link text has a different form from the canonical term, e.g., \"web pages\" (note the plural), you can provide a hint on the term definition with the \u003ccode\u003edata-lt\u003c/code\u003e attribute. In this example, modify the term to be \u003ccode\u003e\u0026lt;dfn data-lt=\"web pages\"\u0026gt;web page\u0026lt;/dfn\u0026gt;\u003c/code\u003e. Multiple alternate names for the term can be separated with pipe characters, with no leading or trailing space, e.g., \u003ccode\u003e\u0026lt;dfn data-lt=\"web pages|page|pages\"\u0026gt;web page\u0026lt;/dfn\u0026gt;\u003c/code\u003e.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eEditing Draft Understanding Content\u003c/h2\u003e\u003ca id=\"user-content-editing-draft-understanding-content\" class=\"anchor\" aria-label=\"Permalink: Editing Draft Understanding Content\" href=\"#editing-draft-understanding-content\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThere is one Understanding file per success criterion, plus an index:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eunderstanding/index.html\u003c/code\u003e - index page, need to uncomment or add a reference to individual Understanding pages as they are made available\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eunderstanding/{version}/*.html\u003c/code\u003e - files for each understanding page, named the same as the success criterion file in the guidelines\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eFiles are populated with a template that provides the expected structure. Leave the template structure in place, and add content as appropriate within the sections. Elements with class=\"instructions\" provide guidance about what content to include in that section; you can remove those elements if you want but don't have to. The template for examples proposes either a bullet list or a series of sub-sections, choose one of those approaches and remove the other from the template. The template for techniques includes sub-sections for \"situations\", remove that wrapper section if not needed.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eUnderstanding files are referenced from the relevant Success Criterion on the WCAG specification; these links are put in by the script.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe formal publication location for Understanding pages is currently \u003ca href=\"https://www.w3.org/WAI/WCAG21/Understanding/\" rel=\"nofollow\"\u003ehttps://www.w3.org/WAI/WCAG21/Understanding/\u003c/a\u003e. This content is updated as needed; and may be automated.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eEditing Techniques\u003c/h2\u003e\u003ca id=\"user-content-editing-techniques\" class=\"anchor\" aria-label=\"Permalink: Editing Techniques\" href=\"#editing-techniques\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTechniques are in the techniques folder, and grouped by technology into sub-folders. Each technique is a standalone file, which is in HTML format with a regular structure of elements, classes, and ids.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eTechnique File Structure\u003c/h3\u003e\u003ca id=\"user-content-technique-file-structure\" class=\"anchor\" aria-label=\"Permalink: Technique File Structure\" href=\"#technique-file-structure\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe \u003ca href=\"/w3c/wcag/blob/main/techniques/technique-template.html\"\u003etechnique template\u003c/a\u003e shows the structure of techniques. Main sections are in top-level \u0026lt;section\u0026gt; elements with specific IDs: meta, applicability, description, examples, tests, related, resources. The description and tests sections are required; the applicability and examples sections are recommended; the related and resources sections are optional. The meta section provides context for the technique during authoring but is removed for publication. The title of the technique is in the \u003ccode\u003e\u0026lt;h1\u0026gt;\u003c/code\u003e element. Elements with \u003ccode\u003eclass=\"instructions\"\u003c/code\u003e provide information about populating the template. They should be removed as the technique is developed but if not removed, will be ignored by the generator. \u003cstrong\u003eDo not copy \u003ccode\u003eclass=\"instructions\"\u003c/code\u003e on real content.\u003c/strong\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eTechniques can use a temporary style sheet to facilitate review of drafts. This style sheet is replaced by other style sheets and structure for formal publication. To use this style sheet, add \u003ccode\u003e\u0026lt;link rel=\"stylesheet\" type=\"text/css\" href=\"../../css/editors.css\"/\u0026gt;\u003c/code\u003e to the head of the technique.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eImages, Examples, Cross References for Techniques\u003c/h3\u003e\u003ca id=\"user-content-images-examples-cross-references-for-techniques\" class=\"anchor\" aria-label=\"Permalink: Images, Examples, Cross References for Techniques\" href=\"#images-examples-cross-references-for-techniques\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTechniques can include images. Place the image file in the \u003ccode\u003eimg\u003c/code\u003e folder of the relevant technology - meaning all techniques for a technology share a common set of images. Use a relative link to load the image. Most images should be loaded with a \u003ccode\u003e\u0026lt;figure\u0026gt;\u003c/code\u003e element and labeled with a \u003ccode\u003e\u0026lt;figcaption\u0026gt;\u003c/code\u003e positioned at the bottom of the figure. \u003ccode\u003e\u0026lt;figure\u0026gt;\u003c/code\u003e elements must have an \u003ccode\u003eid\u003c/code\u003e attribute. Small inline images may be loaded with a \u003ccode\u003e\u0026lt;img\u0026gt;\u003c/code\u003e element with suitable \u003ccode\u003ealt\u003c/code\u003e text.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eTechniques should include brief code examples to demonstrate how to author content that follows the technique. Code examples should be easy to read, and usually not complete content in themselves. More complete examples can be provided as \u003ca href=\"#user-content-provide-working-examples-of-techniques\"\u003eworking examples\u003c/a\u003e (see below). Link to working examples at the bottom of each example, in a \u003ccode\u003e\u0026lt;p class=\"working-example\"\u0026gt;\u003c/code\u003e element, containing a relative link to \u003ccode\u003e../../working-examples/{example-name}/\u003c/code\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eCross references to other techniques may be provided where useful. Generally they should be provided in the \"Related Techniques\" section but can be provided elsewhere. Use a relative link to reference the technique, \u003ccode\u003e{Technique ID}\u003c/code\u003e if the same technology, or \u003ccode\u003e../{Technology}/{Technique ID}\u003c/code\u003e otherwise. If the technique is still under development and does not have a formal ID, reference the path to the development file. If the technique is under development in a different branch, use an absolute URI to the rawgit version of the technique.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eCross references to guidelines and success criteria should use a relative URI to the \u003cem\u003eUnderstanding\u003c/em\u003e page for that item. Cross references to other parts of the guidelines should use an absolute URI to the guidelines as published on the W3C TR page, a URI beginning with \u003ccode\u003ehttps://www.w3.org/TR/WCAG21/#\u003c/code\u003e. Note that references to guidelines or success criteria to which techniques relate are added by the generator upon publication based on information in the Understanding documents, so redundant links to those is not normally needed or advised.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eCreate Techniques\u003c/h3\u003e\u003ca id=\"user-content-create-techniques\" class=\"anchor\" aria-label=\"Permalink: Create Techniques\" href=\"#create-techniques\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://www.w3.org/WAI/GL/wiki/Wcag21-techniques\" rel=\"nofollow\"\u003eGeneral priorities and process to work on techniques are maintained in the wiki\u003c/a\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eNew techniques should use a filename that is derived from a shortened version of the technique title. Editors will assign the technique an ID and rename the file when it is accepted by the Working Group. For example, a technique \"Using the alt attribute on the img element to provide short text alternatives\" might use \"img-alt-short-text-alternatives.html\" as the filename. The editors will assign it a formal ID, and rename the file, when it is accepted by the Working Group.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eEach new technique should be created in a new branch. Set-up of the branch and file is automated via the create-techniques.sh script, which can be run with bash. The command line is:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-shell notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"bash create-techniques.sh \u0026lt;technology\u0026gt; \u0026lt;filename\u0026gt; \u0026lt;type\u0026gt; \u0026quot;\u0026lt;title\u0026gt;\u0026quot;\"\u003e\u003cpre\u003ebash create-techniques.sh \u003cspan class=\"pl-k\"\u003e\u0026lt;\u003c/span\u003etechnology\u003cspan class=\"pl-k\"\u003e\u0026gt;\u003c/span\u003e \u003cspan class=\"pl-k\"\u003e\u0026lt;\u003c/span\u003efilename\u003cspan class=\"pl-k\"\u003e\u0026gt;\u003c/span\u003e \u003cspan class=\"pl-k\"\u003e\u0026lt;\u003c/span\u003etype\u003cspan class=\"pl-k\"\u003e\u0026gt;\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e\"\u003c/span\u003e\u0026lt;title\u0026gt;\u003cspan class=\"pl-pds\"\u003e\"\u003c/span\u003e\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003e\u0026lt;technology\u0026gt;\u003c/code\u003e is the technology directory for the technique\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003e\u0026lt;filename\u0026gt;\u003c/code\u003e is the temporary filename (without extension) for the technique\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003e\u0026lt;type\u0026gt;\u003c/code\u003e is \"technique\" or \"failure\"\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003e\u0026lt;title\u0026gt;\u003c/code\u003e is the title of the technique, enclosed in quotes and escaping special characters with \\\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eThis automates the following steps:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eDetermine a filename for the technique that is likely to be descriptive, unique, and short.\u003c/li\u003e\n\u003cli\u003eCreate a working branch named the same as the technique filename.\u003c/li\u003e\n\u003cli\u003eCopy the techniques/technique-template.html file into the appropriate technology folder for the technique, and give it the chosen file name.\u003c/li\u003e\n\u003cli\u003eIn the section element with id \"meta\", indicate to which guideline or success criterion the technique relates, and whether the technique is sufficient, advisory, or a failure for that item. Multiple applicability are allowed.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eOnce a technique branch and file is set up, populate the content and request review:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003ePopulate the template with appropriate content, using other techniques as examples for code formatting choices. Keep the existing structural sections from the template in place.\u003c/li\u003e\n\u003cli\u003eWhen the technique is ready for review, make a pull request into the main branch.\u003c/li\u003e\n\u003cli\u003eIf you wish to reference the draft technique from an Understanding document, use the technique's rawgit URI.\u003c/li\u003e\n\u003cli\u003eAfter a technique is approved, the chairs will assign it an ID and update links to it in the Undestanding documents.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eFormatting Techniques\u003c/h3\u003e\u003ca id=\"user-content-formatting-techniques\" class=\"anchor\" aria-label=\"Permalink: Formatting Techniques\" href=\"#formatting-techniques\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTechniques in the repository are plain HTML files with minimal formatting. For publication to the editors' draft and W3C location, techniques are formatted by the Eleventy build process described above in the \u003ca href=\"#build-system\"\u003eBuild System section\u003c/a\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe generator compiles the techniques together as a suite with formatting and navigation. It enforces certain structures, such as ordering top-level sections described above and standardizing headings. It attempts to process cross reference links to make sure the URIs work upon publication. One of the most substantial roles is to populate the Applicability section with references to the guidelines or success criteria to which the technique relates. The information for this comes from the Understanding documents. Proper use of the technique template is important to enable this functionality, and mal-formed techniques may cause the generator to fail.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eObsolete Techniques\u003c/h3\u003e\u003ca id=\"user-content-obsolete-techniques\" class=\"anchor\" aria-label=\"Permalink: Obsolete Techniques\" href=\"#obsolete-techniques\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eObsolete techniques should not be removed from the repository. Instead, they can be marked using YAML front-matter. For example:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-yaml notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"---\nobsoleteSince: 22\nobsoleteMessage: |\n This failure relates to 4.1.1: Parsing, which was removed as of WCAG 2.2.\n---\"\u003e\u003cpre\u003e---\n\u003cspan class=\"pl-ent\"\u003eobsoleteSince\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003e22\u003c/span\u003e\n\u003cspan class=\"pl-ent\"\u003eobsoleteMessage\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e|\u003c/span\u003e\n\u003cspan class=\"pl-s\"\u003e This failure relates to 4.1.1: Parsing, which was removed as of WCAG 2.2.\u003c/span\u003e\n\u003cspan class=\"pl-s\"\u003e\u003c/span\u003e---\u003c/pre\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eobsoleteSince\u003c/code\u003e indicates the earliest version of WCAG 2 when the technique became obsolete\n(this may be set to \u003ccode\u003e20\u003c/code\u003e if it should effectively be obsolete for all versions, e.g. for\ntechniques involving deprecated HTML elements)\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eobsoleteMessage\u003c/code\u003e indicates a message to be displayed within the About this Technique section\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eIn cases where entire technologies are obsolete (e.g. Flash and Silverlight), these properties may also be specified at the technique subdirectory level, e.g. via \u003ccode\u003etechniques/flash/flash.11tydata.json\u003c/code\u003e.\nNote that this case specifically requires JSON format, as this is consumed by both Eleventy and additional code in the build process used to assemble techniques data.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eVersion-specific Documentation\u003c/h2\u003e\u003ca id=\"user-content-version-specific-documentation\" class=\"anchor\" aria-label=\"Permalink: Version-specific Documentation\" href=\"#version-specific-documentation\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eInformative documents are generated from the same source files for both WCAG 2.2 and 2.1,\nas most of their content is consistent between them. (The guidelines themselves continue to be\nmaintained on separate branches e.g. \u003ccode\u003eWCAG-2.1\u003c/code\u003e, for purposes of maintaining separate Editors' Drafts.)\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eWhen building informative documents for older versions, the build system prunes success criteria that are\nspecific to newer versions, and in turn any techniques that are exclusively related to those criteria.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThere are a few cases where content may need to cater to a specific version, explained in this section.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eSpecifying Precise Version Number within Informative Documents\u003c/h3\u003e\u003ca id=\"user-content-specifying-precise-version-number-within-informative-documents\" class=\"anchor\" aria-label=\"Permalink: Specifying Precise Version Number within Informative Documents\" href=\"#specifying-precise-version-number-within-informative-documents\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eNote:\u003c/strong\u003e This is \u003cem\u003eonly\u003c/em\u003e applicable within \u003ccode\u003etechniques\u003c/code\u003e and \u003ccode\u003eunderstanding\u003c/code\u003e folders (\u003cem\u003enot\u003c/em\u003e \u003ccode\u003eguidelines\u003c/code\u003e).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eIn cases where the precise version number should be displayed within informative documents,\ninsert \u003ccode\u003e{{ versionDecimal }}\u003c/code\u003e. This will be replaced with the decimal-point-delimited version number,\ne.g. 2.1 or 2.2.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\"New in {version}\" Call-outs\u003c/h3\u003e\u003ca id=\"user-content-new-in-version-call-outs\" class=\"anchor\" aria-label=\"Permalink: \u0026quot;New in {version}\u0026quot; Call-outs\" href=\"#new-in-version-call-outs\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIn cases where a document pertaining to multiple versions warrants a specific call-out about an update in\na newer version, \u003ccode\u003eclass=\"wcagXY\"\u003c/code\u003e can be applied to an element surrounding the prose in question\n(e.g. \u003ccode\u003eclass=\"wcag22\"\u003c/code\u003e for WCAG 2.2). This will result in the prose being omitted from earlier versions,\nand displayed with the prefix \"New in WCAG X.Y: \" in applicable versions.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThis class can also be applied alongside the \u003ccode\u003enote\u003c/code\u003e class, in which case \" (New in WCAG X.Y)\" will be\nappended to the \"Note\" title in applicable versions, and the note will be hidden in earlier versions.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eTechniques Change Log\u003c/h3\u003e\u003ca id=\"user-content-techniques-change-log\" class=\"anchor\" aria-label=\"Permalink: Techniques Change Log\" href=\"#techniques-change-log\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eAt the time of writing (November 2024), the Change Log in the Techniques index is identical between WCAG 2.1 and 2.2.\nThese have been split out into separate version-specific includes under \u003ccode\u003e_includes/techniques/changelog/*.html\u003c/code\u003e\nfor future-proofing in support of building multiple versions of informative documents from the same branch.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eWorking Examples\u003c/h2\u003e\u003ca id=\"user-content-working-examples\" class=\"anchor\" aria-label=\"Permalink: Working Examples\" href=\"#working-examples\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eExamples in techniques should be brief easy-to-consume code samples of how the technique is used in content. Therefore examples should focus on the specific features the technique describes, and not include related content such as style, script, surrounding web content, etc.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eOften it is desirable to provide more comprehensive examples, which show the technique in action while not interfering with the main technique document. These examples also show the complete code required to make the technique operate, including full style and script files, images, page code, etc. Usually, these \"working examples\" are referenced at the bottom of the elided example which is included in the main technique.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eWorking examples are stored in the \u003ccode\u003eworking-examples\u003c/code\u003e directory of the repository. Each example is in its own subdirectory, to contain the multiple files that may be necessary to make the example work. In some cases, multiple working examples will share common resources; these are stored in the appropriate sub-directory of the working-examples directory, e.g., \u003ccode\u003eworking-examples/css\u003c/code\u003e, \u003ccode\u003eworking-examples/img\u003c/code\u003e, \u003ccode\u003eworking-examples/script\u003c/code\u003e. Reference these common resources when available; otherwise place resources in the working example directory, using subdirectories to organize when appropriate.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eTo create a working example:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eIdentify the name for the example, e.g., \"Using the alt attribute\".\u003c/li\u003e\n\u003cli\u003eCreate a working branch for the example, whose name begins with the prefix \u003ccode\u003eexample-\u003c/code\u003e and which otherwise semantically identifies the example, e.g., \u003ccode\u003eexample-alt-attribute\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eCreate a directory for the example inside the working examples directory, using the semantic name for the example minus the prefix used in the branch name, e.g., \u003ccode\u003eworking-examples/alt-attribute/\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eIf the primary example is HTML, name the file \u003ccode\u003eindex.html\u003c/code\u003e. Otherwise, create a suitable file name.\u003c/li\u003e\n\u003cli\u003eRefer to resources shared among multiple examples using relative links, e.g., \u003ccode\u003e../css/example.css\u003c/code\u003e. Place other resources in the same directory as the main example, e.g., \u003ccode\u003eworking-examples/alt-attribute/css/alt.css\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eReference working examples from techniques using the rawgit URI to the example in its development branch, e.g., \u003ccode\u003ehttps://rawgit.com/w3c/wcag/main/working-examples/alt-attribute/\u003c/code\u003e. Editors will update links when examples are approved.\u003c/li\u003e\n\u003cli\u003eWhen the example is complete and functional, submit a pull request into the main branch.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eErrata\u003c/h2\u003e\u003ca id=\"user-content-errata\" class=\"anchor\" aria-label=\"Permalink: Errata\" href=\"#errata\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe errata documents for WCAG 2.1 and 2.2 are now maintained in this repository.\nSee the \u003ca href=\"/w3c/wcag/blob/main/errata/README.md\"\u003eErrata README\u003c/a\u003e for authoring details.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eNote:\u003c/strong\u003e The errata for both versions are maintained on the \u003ccode\u003emain\u003c/code\u003e branch for use in builds.\nDirect edits to the guidelines for WCAG 2.1 must be performed under \u003ccode\u003eguidelines/\u003c/code\u003e on the \u003ccode\u003eWCAG-2.1\u003c/code\u003e branch.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eTranslations\u003c/h2\u003e\u003ca id=\"user-content-translations\" class=\"anchor\" aria-label=\"Permalink: Translations\" href=\"#translations\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eWCAG 2.2 is ready for translation. To translate WCAG 2.2, follow instructions at \u003ca href=\"https://www.w3.org/WAI/about/translating/wcag/\" rel=\"nofollow\"\u003eHow to Translate WCAG 2\u003c/a\u003e.\u003c/p\u003e\n\u003c/article\u003e","loaded":true,"timedOut":false,"errorMessage":null,"headerInfo":{"toc":[{"level":1,"text":"WCAG (Web Content Accessibility Guidelines) - Branch for production of August 2016 review versions","anchor":"wcag-web-content-accessibility-guidelines---branch-for-production-of-august-2016-review-versions","htmlText":"WCAG (Web Content Accessibility Guidelines) - Branch for production of August 2016 review versions"},{"level":2,"text":"Editorial style guide","anchor":"editorial-style-guide","htmlText":"Editorial style guide"},{"level":2,"text":"File Structure","anchor":"file-structure","htmlText":"File Structure"},{"level":2,"text":"Build System","anchor":"build-system","htmlText":"Build System"},{"level":2,"text":"Editing Draft Success Criteria","anchor":"editing-draft-success-criteria","htmlText":"Editing Draft Success Criteria"},{"level":3,"text":"Success Criteria Format","anchor":"success-criteria-format","htmlText":"Success Criteria Format"},{"level":3,"text":"Definitions","anchor":"definitions","htmlText":"Definitions"},{"level":2,"text":"Editing Draft Understanding Content","anchor":"editing-draft-understanding-content","htmlText":"Editing Draft Understanding Content"},{"level":2,"text":"Editing Techniques","anchor":"editing-techniques","htmlText":"Editing Techniques"},{"level":3,"text":"Technique File Structure","anchor":"technique-file-structure","htmlText":"Technique File Structure"},{"level":3,"text":"Images, Examples, Cross References for Techniques","anchor":"images-examples-cross-references-for-techniques","htmlText":"Images, Examples, Cross References for Techniques"},{"level":3,"text":"Create Techniques","anchor":"create-techniques","htmlText":"Create Techniques"},{"level":3,"text":"Formatting Techniques","anchor":"formatting-techniques","htmlText":"Formatting Techniques"},{"level":3,"text":"Obsolete Techniques","anchor":"obsolete-techniques","htmlText":"Obsolete Techniques"},{"level":2,"text":"Version-specific Documentation","anchor":"version-specific-documentation","htmlText":"Version-specific Documentation"},{"level":3,"text":"Specifying Precise Version Number within Informative Documents","anchor":"specifying-precise-version-number-within-informative-documents","htmlText":"Specifying Precise Version Number within Informative Documents"},{"level":3,"text":"\"New in {version}\" Call-outs","anchor":"new-in-version-call-outs","htmlText":"\"New in {version}\" Call-outs"},{"level":3,"text":"Techniques Change Log","anchor":"techniques-change-log","htmlText":"Techniques Change Log"},{"level":2,"text":"Working Examples","anchor":"working-examples","htmlText":"Working Examples"},{"level":2,"text":"Errata","anchor":"errata","htmlText":"Errata"},{"level":2,"text":"Translations","anchor":"translations","htmlText":"Translations"}],"siteNavLoginPath":"/login?return_to=https%3A%2F%2Fgithub.com%2Fw3c%2Fwcag"}},{"displayName":"CODE_OF_CONDUCT.md","repoName":"wcag","refName":"main","path":"CODE_OF_CONDUCT.md","preferredFileType":"code_of_conduct","tabName":"Code of 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review versions" href="#wcag-web-content-accessibility-guidelines---branch-for-production-of-august-2016-review-versions"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Please use this branch as the target for pull requests until July 10, 2016.</p> <p dir="auto">This repository is used to develop content for WCAG 2, as well as associated understanding documents and techniques.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Editorial style guide</h2><a id="user-content-editorial-style-guide" class="anchor" aria-label="Permalink: Editorial style guide" href="#editorial-style-guide"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">@@To complete</p> <ul dir="auto"> <li>Avoid use of RFC2119 terms such as "must", "shall", or "may" in non-normative content, to avoid confusion with normative role.</li> </ul> <p dir="auto">See also: <a href="https://github.com/w3c/wcag/wiki/WCAG-2-style-guide">WCAG 2 Style Guide</a></p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">File Structure</h2><a id="user-content-file-structure" class="anchor" aria-label="Permalink: File Structure" href="#file-structure"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">WCAG 2.0 was maintained in a different file structure than subsequent versions of WCAG. Source files for WCAG 2.0 are in the wcag20 folder and exists primarily for archival purposes. Do not edit content in that folder.</p> <p dir="auto">Content for WCAG 2.1 and later is organized according to the file structure below. The WCAG repository contains source and auxiliary files for WCAG 2, Understanding WCAG 2, and eventually techniques. It also contains auxiliary files that support automated formatting of the document. To facilitate multi-party editing, each success criterion is in a separate file, consisting of a HTML fragment that can be included into the main guidelines. Key files include:</p> <ul dir="auto"> <li><code>guidelines/index.html</code> - the main guidelines file</li> <li><code>guidelines/sc/{version}/*.html</code> - files for each success criterion</li> <li><code>guidelines/terms/{version}/*.html</code> - files for each definition</li> <li><code>understanding/{version}/*.html</code> - understanding files for each success criterion</li> <li><code>wcag20/</code> was used by a previous version of WCAG, so anything ending .xml is no longer used, <em>do not update</em>.</li> </ul> <p dir="auto">Where <code>{version}</code> is "20", content came from WCAG 2.0. "21" is used for content introduced in WCAG 2.1, "22" for WCAG 2.2, etc.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Build System</h2><a id="user-content-build-system" class="anchor" aria-label="Permalink: Build System" href="#build-system"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">The Techniques and Understanding documents are processed through a build system based on Eleventy and Liquid for templating and Cheerio for transformations. More details, including instructions for previewing the output locally, can be found in the <a href="/w3c/wcag/blob/main/11ty/README.md">build process README</a>.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Editing Draft Success Criteria</h2><a id="user-content-editing-draft-success-criteria" class="anchor" aria-label="Permalink: Editing Draft Success Criteria" href="#editing-draft-success-criteria"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><a href="https://www.w3.org/WAI/GL/wiki/SC_Managers_Phase1" rel="nofollow">Success Criteria Managers</a> will prepare candidate success criteria, ready for inclusion in the guidelines document. To prepare success criteria, follow these steps:</p> <ol dir="auto"> <li><a href="https://help.github.com/articles/cloning-a-repository/">Clone the repository</a>, using the URI <a href="https://github.com/w3c/wcag.git">https://github.com/w3c/wcag.git</a> to clone.</li> <li>Switch to the working branch for the proposal, which is named for the shortname of the draft success criterion and the issue number, concatenated together.</li> <li>Find the appropriate file for the success criterion in the guidelines/sc/21 folder, named the same as the start of the branch name, and open in an HTML-capable editor. Do the same with any definitions referenced by the success criterion, in the guidelines/terms/21 folder.</li> <li>Open the guidelines/index.html file and remove comment marks around the lines that reference the success criterion and terms you have edited..</li> <li>Follow the <a href="#user-content-success-criteria-format">success criteria format</a> below to create the SC content.</li> <li>Save the file and commit the change. NOTE: It is important to also add a suitable 'commit message'. In the comments, reference the issue number from which the proposal was developed starting with a hash, e.g., <code>#1</code>.</li> <li>When the success criterion is ready for Working Group review, inform the chairs. Once the proposal has been accepted by the Working Group, the editors will merge the working branch into the main branch, which puts it in the editors' draft and eventual Technical Report publication.</li> </ol> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Success Criteria Format</h3><a id="user-content-success-criteria-format" class="anchor" aria-label="Permalink: Success Criteria Format" href="#success-criteria-format"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Success criteria use a simple structure of HTML elements, with a few class attribute values, to ensure consistency. Enhancement scripts and style key off this structure. Content you provide is indicated in braces. Items after comments are optional.</p> <div class="highlight highlight-text-html-basic notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="<section class="sc"> <h4>{SC Handle}</h4> <p class="conformance-level">{Level}</p> <p class="change">{Change}</p> <p>{Main SC Text}</p> <!-- if SC has sub-points --> <dl> <dt>{Point Handle}</dt> <dd>{Point Text}</dd> </dl> <!-- if SC has notes --> <p class="note">{Note}</p> </section>"><pre><span class="pl-kos"><</span><span class="pl-ent">section</span> <span class="pl-c1">class</span>="<span class="pl-s">sc</span>"<span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">h4</span><span class="pl-kos">></span>{SC Handle}<span class="pl-kos"></</span><span class="pl-ent">h4</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">p</span> <span class="pl-c1">class</span>="<span class="pl-s">conformance-level</span>"<span class="pl-kos">></span>{Level}<span class="pl-kos"></</span><span class="pl-ent">p</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">p</span> <span class="pl-c1">class</span>="<span class="pl-s">change</span>"<span class="pl-kos">></span>{Change}<span class="pl-kos"></</span><span class="pl-ent">p</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">p</span><span class="pl-kos">></span>{Main SC Text}<span class="pl-kos"></</span><span class="pl-ent">p</span><span class="pl-kos">></span> <span class="pl-c"><!-- if SC has sub-points --></span> <span class="pl-kos"><</span><span class="pl-ent">dl</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">dt</span><span class="pl-kos">></span>{Point Handle}<span class="pl-kos"></</span><span class="pl-ent">dt</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">dd</span><span class="pl-kos">></span>{Point Text}<span class="pl-kos"></</span><span class="pl-ent">dd</span><span class="pl-kos">></span> <span class="pl-kos"></</span><span class="pl-ent">dl</span><span class="pl-kos">></span> <span class="pl-c"><!-- if SC has notes --></span> <span class="pl-kos"><</span><span class="pl-ent">p</span> <span class="pl-c1">class</span>="<span class="pl-s">note</span>"<span class="pl-kos">></span>{Note}<span class="pl-kos"></</span><span class="pl-ent">p</span><span class="pl-kos">></span> <span class="pl-kos"></</span><span class="pl-ent">section</span><span class="pl-kos">></span></pre></div> <p dir="auto">Note you do not provide the SC number. Numbers will be assigned, and most likely automatically generated, later.</p> <p dir="auto">Values you provide are described below. Refer to <a href="https://www.w3.org/TR/WCAG20/#time-limits-required-behaviors" rel="nofollow">Success Criterion 2.2.1</a> for an example of each of these pieces of content.</p> <dl> <dt>{SC Handle}</dt> <dd>The short name of the SC. In SC 2.2.1 this is "Timing Adjustable".</dd> <dt>{Level}</dt> <dd>The conformance level of the SC. Values can be "A", "AA", or "AAA". Do not include the word "Level".</dd> <dt>{Change}</dt> <dd>Indicate whether the SC is unchanged from WCAG 2.0, changed, or new. Values can be "Unchanged", "Changed", or "New".</dd> <dt>{Main SC Text}</dt> <dd>The main text of the SC, or the starting paragraph. In SC 2.2.1 this is the content that begins "For each time limit...".</dd> <dt>{Point Handle}</dt> <dd>If the SC has bullets, each bullet has a handle. In SC 2.2.1 the first bullet point handle is "Turn off".</dd> <dt>{Point Text}</dt> <dd>The content of the bullet. In SC 2.2.1 the first bullet point text begins "The user is allowed...".</dd> <dt>{Note}</dt> <dd>If there is a note to the SC, provide it after the other content (without the starter "Note"). In SC 2.2.1, this is the content that begins "This success criterion...". If there is more than one note, multiple `<p dir="auto">`elements may be provided.</p></dd> </dl> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Definitions</h3><a id="user-content-definitions" class="anchor" aria-label="Permalink: Definitions" href="#definitions"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">If you are providing term definitions along with your SC, include them in the respective <code>guidelines/terms/{version}</code> directory, one-per-file, using the following format:</p> <div class="highlight highlight-text-html-basic notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="<dt><dfn id="dfn-{shortname}">{Term}</dfn></dt> <dd>{Definition}</dd>"><pre><span class="pl-kos"><</span><span class="pl-ent">dt</span><span class="pl-kos">></span><span class="pl-kos"><</span><span class="pl-ent">dfn</span> <span class="pl-c1">id</span>="<span class="pl-s">dfn-{shortname}</span>"<span class="pl-kos">></span>{Term}<span class="pl-kos"></</span><span class="pl-ent">dfn</span><span class="pl-kos">></span><span class="pl-kos"></</span><span class="pl-ent">dt</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">dd</span><span class="pl-kos">></span>{Definition}<span class="pl-kos"></</span><span class="pl-ent">dd</span><span class="pl-kos">></span></pre></div> <p dir="auto">The <code>dfn</code> element tells the script that this is a term and causes special styling and linking features. To link to a term, use an <code><a></code> element without an <code>href</code> attribute; if the link text is the same as the term, the link will be correctly generated. For example, if there is a term <code><dfn>web page</dfn></code> on the page, a link in the form of <code><a>web page</a></code> will result in a proper link.</p> <p dir="auto">If the link text has a different form from the canonical term, e.g., "web pages" (note the plural), you can provide a hint on the term definition with the <code>data-lt</code> attribute. In this example, modify the term to be <code><dfn data-lt="web pages">web page</dfn></code>. Multiple alternate names for the term can be separated with pipe characters, with no leading or trailing space, e.g., <code><dfn data-lt="web pages|page|pages">web page</dfn></code>.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Editing Draft Understanding Content</h2><a id="user-content-editing-draft-understanding-content" class="anchor" aria-label="Permalink: Editing Draft Understanding Content" href="#editing-draft-understanding-content"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">There is one Understanding file per success criterion, plus an index:</p> <ul dir="auto"> <li><code>understanding/index.html</code> - index page, need to uncomment or add a reference to individual Understanding pages as they are made available</li> <li><code>understanding/{version}/*.html</code> - files for each understanding page, named the same as the success criterion file in the guidelines</li> </ul> <p dir="auto">Files are populated with a template that provides the expected structure. Leave the template structure in place, and add content as appropriate within the sections. Elements with class="instructions" provide guidance about what content to include in that section; you can remove those elements if you want but don't have to. The template for examples proposes either a bullet list or a series of sub-sections, choose one of those approaches and remove the other from the template. The template for techniques includes sub-sections for "situations", remove that wrapper section if not needed.</p> <p dir="auto">Understanding files are referenced from the relevant Success Criterion on the WCAG specification; these links are put in by the script.</p> <p dir="auto">The formal publication location for Understanding pages is currently <a href="https://www.w3.org/WAI/WCAG21/Understanding/" rel="nofollow">https://www.w3.org/WAI/WCAG21/Understanding/</a>. This content is updated as needed; and may be automated.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Editing Techniques</h2><a id="user-content-editing-techniques" class="anchor" aria-label="Permalink: Editing Techniques" href="#editing-techniques"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Techniques are in the techniques folder, and grouped by technology into sub-folders. Each technique is a standalone file, which is in HTML format with a regular structure of elements, classes, and ids.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Technique File Structure</h3><a id="user-content-technique-file-structure" class="anchor" aria-label="Permalink: Technique File Structure" href="#technique-file-structure"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">The <a href="/w3c/wcag/blob/main/techniques/technique-template.html">technique template</a> shows the structure of techniques. Main sections are in top-level <section> elements with specific IDs: meta, applicability, description, examples, tests, related, resources. The description and tests sections are required; the applicability and examples sections are recommended; the related and resources sections are optional. The meta section provides context for the technique during authoring but is removed for publication. The title of the technique is in the <code><h1></code> element. Elements with <code>class="instructions"</code> provide information about populating the template. They should be removed as the technique is developed but if not removed, will be ignored by the generator. <strong>Do not copy <code>class="instructions"</code> on real content.</strong></p> <p dir="auto">Techniques can use a temporary style sheet to facilitate review of drafts. This style sheet is replaced by other style sheets and structure for formal publication. To use this style sheet, add <code><link rel="stylesheet" type="text/css" href="../../css/editors.css"/></code> to the head of the technique.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Images, Examples, Cross References for Techniques</h3><a id="user-content-images-examples-cross-references-for-techniques" class="anchor" aria-label="Permalink: Images, Examples, Cross References for Techniques" href="#images-examples-cross-references-for-techniques"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Techniques can include images. Place the image file in the <code>img</code> folder of the relevant technology - meaning all techniques for a technology share a common set of images. Use a relative link to load the image. Most images should be loaded with a <code><figure></code> element and labeled with a <code><figcaption></code> positioned at the bottom of the figure. <code><figure></code> elements must have an <code>id</code> attribute. Small inline images may be loaded with a <code><img></code> element with suitable <code>alt</code> text.</p> <p dir="auto">Techniques should include brief code examples to demonstrate how to author content that follows the technique. Code examples should be easy to read, and usually not complete content in themselves. More complete examples can be provided as <a href="#user-content-provide-working-examples-of-techniques">working examples</a> (see below). Link to working examples at the bottom of each example, in a <code><p class="working-example"></code> element, containing a relative link to <code>../../working-examples/{example-name}/</code>.</p> <p dir="auto">Cross references to other techniques may be provided where useful. Generally they should be provided in the "Related Techniques" section but can be provided elsewhere. Use a relative link to reference the technique, <code>{Technique ID}</code> if the same technology, or <code>../{Technology}/{Technique ID}</code> otherwise. If the technique is still under development and does not have a formal ID, reference the path to the development file. If the technique is under development in a different branch, use an absolute URI to the rawgit version of the technique.</p> <p dir="auto">Cross references to guidelines and success criteria should use a relative URI to the <em>Understanding</em> page for that item. Cross references to other parts of the guidelines should use an absolute URI to the guidelines as published on the W3C TR page, a URI beginning with <code>https://www.w3.org/TR/WCAG21/#</code>. Note that references to guidelines or success criteria to which techniques relate are added by the generator upon publication based on information in the Understanding documents, so redundant links to those is not normally needed or advised.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Create Techniques</h3><a id="user-content-create-techniques" class="anchor" aria-label="Permalink: Create Techniques" href="#create-techniques"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><a href="https://www.w3.org/WAI/GL/wiki/Wcag21-techniques" rel="nofollow">General priorities and process to work on techniques are maintained in the wiki</a>.</p> <p dir="auto">New techniques should use a filename that is derived from a shortened version of the technique title. Editors will assign the technique an ID and rename the file when it is accepted by the Working Group. For example, a technique "Using the alt attribute on the img element to provide short text alternatives" might use "img-alt-short-text-alternatives.html" as the filename. The editors will assign it a formal ID, and rename the file, when it is accepted by the Working Group.</p> <p dir="auto">Each new technique should be created in a new branch. Set-up of the branch and file is automated via the create-techniques.sh script, which can be run with bash. The command line is:</p> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="bash create-techniques.sh <technology> <filename> <type> "<title>""><pre>bash create-techniques.sh <span class="pl-k"><</span>technology<span class="pl-k">></span> <span class="pl-k"><</span>filename<span class="pl-k">></span> <span class="pl-k"><</span>type<span class="pl-k">></span> <span class="pl-s"><span class="pl-pds">"</span><title><span class="pl-pds">"</span></span></pre></div> <ul dir="auto"> <li><code><technology></code> is the technology directory for the technique</li> <li><code><filename></code> is the temporary filename (without extension) for the technique</li> <li><code><type></code> is "technique" or "failure"</li> <li><code><title></code> is the title of the technique, enclosed in quotes and escaping special characters with \</li> </ul> <p dir="auto">This automates the following steps:</p> <ul dir="auto"> <li>Determine a filename for the technique that is likely to be descriptive, unique, and short.</li> <li>Create a working branch named the same as the technique filename.</li> <li>Copy the techniques/technique-template.html file into the appropriate technology folder for the technique, and give it the chosen file name.</li> <li>In the section element with id "meta", indicate to which guideline or success criterion the technique relates, and whether the technique is sufficient, advisory, or a failure for that item. Multiple applicability are allowed.</li> </ul> <p dir="auto">Once a technique branch and file is set up, populate the content and request review:</p> <ul dir="auto"> <li>Populate the template with appropriate content, using other techniques as examples for code formatting choices. Keep the existing structural sections from the template in place.</li> <li>When the technique is ready for review, make a pull request into the main branch.</li> <li>If you wish to reference the draft technique from an Understanding document, use the technique's rawgit URI.</li> <li>After a technique is approved, the chairs will assign it an ID and update links to it in the Undestanding documents.</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Formatting Techniques</h3><a id="user-content-formatting-techniques" class="anchor" aria-label="Permalink: Formatting Techniques" href="#formatting-techniques"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Techniques in the repository are plain HTML files with minimal formatting. For publication to the editors' draft and W3C location, techniques are formatted by the Eleventy build process described above in the <a href="#build-system">Build System section</a>.</p> <p dir="auto">The generator compiles the techniques together as a suite with formatting and navigation. It enforces certain structures, such as ordering top-level sections described above and standardizing headings. It attempts to process cross reference links to make sure the URIs work upon publication. One of the most substantial roles is to populate the Applicability section with references to the guidelines or success criteria to which the technique relates. The information for this comes from the Understanding documents. Proper use of the technique template is important to enable this functionality, and mal-formed techniques may cause the generator to fail.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Obsolete Techniques</h3><a id="user-content-obsolete-techniques" class="anchor" aria-label="Permalink: Obsolete Techniques" href="#obsolete-techniques"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Obsolete techniques should not be removed from the repository. Instead, they can be marked using YAML front-matter. For example:</p> <div class="highlight highlight-source-yaml notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="--- obsoleteSince: 22 obsoleteMessage: | This failure relates to 4.1.1: Parsing, which was removed as of WCAG 2.2. ---"><pre>--- <span class="pl-ent">obsoleteSince</span>: <span class="pl-c1">22</span> <span class="pl-ent">obsoleteMessage</span>: <span class="pl-s">|</span> <span class="pl-s"> This failure relates to 4.1.1: Parsing, which was removed as of WCAG 2.2.</span> <span class="pl-s"></span>---</pre></div> <ul dir="auto"> <li><code>obsoleteSince</code> indicates the earliest version of WCAG 2 when the technique became obsolete (this may be set to <code>20</code> if it should effectively be obsolete for all versions, e.g. for techniques involving deprecated HTML elements)</li> <li><code>obsoleteMessage</code> indicates a message to be displayed within the About this Technique section</li> </ul> <p dir="auto">In cases where entire technologies are obsolete (e.g. Flash and Silverlight), these properties may also be specified at the technique subdirectory level, e.g. via <code>techniques/flash/flash.11tydata.json</code>. Note that this case specifically requires JSON format, as this is consumed by both Eleventy and additional code in the build process used to assemble techniques data.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Version-specific Documentation</h2><a id="user-content-version-specific-documentation" class="anchor" aria-label="Permalink: Version-specific Documentation" href="#version-specific-documentation"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Informative documents are generated from the same source files for both WCAG 2.2 and 2.1, as most of their content is consistent between them. (The guidelines themselves continue to be maintained on separate branches e.g. <code>WCAG-2.1</code>, for purposes of maintaining separate Editors' Drafts.)</p> <p dir="auto">When building informative documents for older versions, the build system prunes success criteria that are specific to newer versions, and in turn any techniques that are exclusively related to those criteria.</p> <p dir="auto">There are a few cases where content may need to cater to a specific version, explained in this section.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Specifying Precise Version Number within Informative Documents</h3><a id="user-content-specifying-precise-version-number-within-informative-documents" class="anchor" aria-label="Permalink: Specifying Precise Version Number within Informative Documents" href="#specifying-precise-version-number-within-informative-documents"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><strong>Note:</strong> This is <em>only</em> applicable within <code>techniques</code> and <code>understanding</code> folders (<em>not</em> <code>guidelines</code>).</p> <p dir="auto">In cases where the precise version number should be displayed within informative documents, insert <code>{{ versionDecimal }}</code>. This will be replaced with the decimal-point-delimited version number, e.g. 2.1 or 2.2.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">"New in {version}" Call-outs</h3><a id="user-content-new-in-version-call-outs" class="anchor" aria-label="Permalink: "New in {version}" Call-outs" href="#new-in-version-call-outs"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">In cases where a document pertaining to multiple versions warrants a specific call-out about an update in a newer version, <code>class="wcagXY"</code> can be applied to an element surrounding the prose in question (e.g. <code>class="wcag22"</code> for WCAG 2.2). This will result in the prose being omitted from earlier versions, and displayed with the prefix "New in WCAG X.Y: " in applicable versions.</p> <p dir="auto">This class can also be applied alongside the <code>note</code> class, in which case " (New in WCAG X.Y)" will be appended to the "Note" title in applicable versions, and the note will be hidden in earlier versions.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Techniques Change Log</h3><a id="user-content-techniques-change-log" class="anchor" aria-label="Permalink: Techniques Change Log" href="#techniques-change-log"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">At the time of writing (November 2024), the Change Log in the Techniques index is identical between WCAG 2.1 and 2.2. These have been split out into separate version-specific includes under <code>_includes/techniques/changelog/*.html</code> for future-proofing in support of building multiple versions of informative documents from the same branch.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Working Examples</h2><a id="user-content-working-examples" class="anchor" aria-label="Permalink: Working Examples" href="#working-examples"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Examples in techniques should be brief easy-to-consume code samples of how the technique is used in content. Therefore examples should focus on the specific features the technique describes, and not include related content such as style, script, surrounding web content, etc.</p> <p dir="auto">Often it is desirable to provide more comprehensive examples, which show the technique in action while not interfering with the main technique document. These examples also show the complete code required to make the technique operate, including full style and script files, images, page code, etc. Usually, these "working examples" are referenced at the bottom of the elided example which is included in the main technique.</p> <p dir="auto">Working examples are stored in the <code>working-examples</code> directory of the repository. Each example is in its own subdirectory, to contain the multiple files that may be necessary to make the example work. In some cases, multiple working examples will share common resources; these are stored in the appropriate sub-directory of the working-examples directory, e.g., <code>working-examples/css</code>, <code>working-examples/img</code>, <code>working-examples/script</code>. Reference these common resources when available; otherwise place resources in the working example directory, using subdirectories to organize when appropriate.</p> <p dir="auto">To create a working example:</p> <ul dir="auto"> <li>Identify the name for the example, e.g., "Using the alt attribute".</li> <li>Create a working branch for the example, whose name begins with the prefix <code>example-</code> and which otherwise semantically identifies the example, e.g., <code>example-alt-attribute</code>.</li> <li>Create a directory for the example inside the working examples directory, using the semantic name for the example minus the prefix used in the branch name, e.g., <code>working-examples/alt-attribute/</code>.</li> <li>If the primary example is HTML, name the file <code>index.html</code>. Otherwise, create a suitable file name.</li> <li>Refer to resources shared among multiple examples using relative links, e.g., <code>../css/example.css</code>. Place other resources in the same directory as the main example, e.g., <code>working-examples/alt-attribute/css/alt.css</code>.</li> <li>Reference working examples from techniques using the rawgit URI to the example in its development branch, e.g., <code>https://rawgit.com/w3c/wcag/main/working-examples/alt-attribute/</code>. Editors will update links when examples are approved.</li> <li>When the example is complete and functional, submit a pull request into the main branch.</li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Errata</h2><a id="user-content-errata" class="anchor" aria-label="Permalink: Errata" href="#errata"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">The errata documents for WCAG 2.1 and 2.2 are now maintained in this repository. See the <a href="/w3c/wcag/blob/main/errata/README.md">Errata README</a> for authoring details.</p> <p dir="auto"><strong>Note:</strong> The errata for both versions are maintained on the <code>main</code> branch for use in builds. Direct edits to the guidelines for WCAG 2.1 must be performed under <code>guidelines/</code> on the <code>WCAG-2.1</code> branch.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Translations</h2><a id="user-content-translations" class="anchor" aria-label="Permalink: Translations" href="#translations"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">WCAG 2.2 is ready for translation. To translate WCAG 2.2, follow instructions at <a href="https://www.w3.org/WAI/about/translating/wcag/" rel="nofollow">How to Translate WCAG 2</a>.</p> </article></div></div></div></div></div> <!-- --> <!-- --> <script type="application/json" id="__PRIMER_DATA_:R0:__">{"resolvedServerColorMode":"day"}</script></div> </react-partial> <input type="hidden" data-csrf="true" value="nRF2ITTV3y0mBGmy+nDyPmkxy06/OFGuX6I46J8+9pH4UsyrPOnXk2X65F38E1/xEsT67q63SBtZAukDOSwubA==" /> </div> <div data-view-component="true" class="Layout-sidebar"> <div class="BorderGrid about-margin" data-pjax> <div class="BorderGrid-row"> <div class="BorderGrid-cell"> <div class="hide-sm hide-md"> <h2 class="mb-3 h4">About</h2> <p class="f4 my-3"> Web Content Accessibility Guidelines </p> <div class="my-3 d-flex flex-items-center"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-link flex-shrink-0 mr-2"> <path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path> </svg> <span class="flex-auto min-width-0 css-truncate css-truncate-target width-fit"> <a title="https://w3c.github.io/wcag/guidelines/22/" role="link" target="_blank" rel="noopener noreferrer nofollow" class="text-bold" href="https://w3c.github.io/wcag/guidelines/22/">w3c.github.io/wcag/guidelines/22/</a> </span> </div> <h3 class="sr-only">Resources</h3> <div class="mt-2"> <a class="Link--muted" data-analytics-event="{"category":"Repository 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0-1.5h2.234a.249.249 0 0 0 .125-.033l1.288-.737c.265-.15.564-.23.869-.23h.984V.75a.75.75 0 0 1 1.5 0Zm2.945 8.477c.285.135.718.273 1.305.273s1.02-.138 1.305-.273L13 6.327Zm-10 0c.285.135.718.273 1.305.273s1.02-.138 1.305-.273L3 6.327Z"></path> </svg> View license </a> </div> <h3 class="sr-only">Code of conduct</h3> <div class="mt-2"> <a href="#coc-ov-file" class="Link--muted" data-analytics-event="{"category":"Repository Overview","action":"click","label":"location:sidebar;file:code of conduct"}" > <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-code-of-conduct mr-2"> <path d="M8.048 2.241c.964-.709 2.079-1.238 3.325-1.241a4.616 4.616 0 0 1 3.282 1.355c.41.408.757.86.996 1.428.238.568.348 1.206.347 1.968 0 2.193-1.505 4.254-3.081 5.862-1.496 1.526-3.213 2.796-4.249 3.563l-.22.163a.749.749 0 0 1-.895 0l-.221-.163c-1.036-.767-2.753-2.037-4.249-3.563C1.51 10.008.007 7.952.002 5.762a4.614 4.614 0 0 1 1.353-3.407C3.123.585 6.223.537 8.048 2.24Zm-1.153.983c-1.25-1.033-3.321-.967-4.48.191a3.115 3.115 0 0 0-.913 2.335c0 1.556 1.109 3.24 2.652 4.813C5.463 11.898 6.96 13.032 8 13.805c.353-.262.758-.565 1.191-.905l-1.326-1.223a.75.75 0 0 1 1.018-1.102l1.48 1.366c.328-.281.659-.577.984-.887L9.99 9.802a.75.75 0 1 1 1.019-1.103l1.384 1.28c.295-.329.566-.661.81-.995L12.92 8.7l-1.167-1.168c-.674-.671-1.78-.664-2.474.03-.268.269-.538.537-.802.797-.893.882-2.319.843-3.185-.032-.346-.35-.693-.697-1.043-1.047a.75.75 0 0 1-.04-1.016c.162-.191.336-.401.52-.623.62-.748 1.356-1.637 2.166-2.417Zm7.112 4.442c.313-.65.491-1.293.491-1.916v-.001c0-.614-.088-1.045-.23-1.385-.143-.339-.357-.633-.673-.949a3.111 3.111 0 0 0-2.218-.915c-1.092.003-2.165.627-3.226 1.602-.823.755-1.554 1.637-2.228 2.45l-.127.154.562.566a.755.755 0 0 0 1.066.02l.794-.79c1.258-1.258 3.312-1.31 4.594-.032.396.394.792.791 1.173 1.173Z"></path> </svg> Code of conduct </a> </div> <include-fragment src="/w3c/wcag/hovercards/citation/sidebar_partial?tree_name=main"> </include-fragment> <div class="mt-2"> <a href="/w3c/wcag/activity" data-view-component="true" class="Link Link--muted"><svg text="gray" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-pulse mr-2"> <path d="M6 2c.306 0 .582.187.696.471L10 10.731l1.304-3.26A.751.751 0 0 1 12 7h3.25a.75.75 0 0 1 0 1.5h-2.742l-1.812 4.528a.751.751 0 0 1-1.392 0L6 4.77 4.696 8.03A.75.75 0 0 1 4 8.5H.75a.75.75 0 0 1 0-1.5h2.742l1.812-4.529A.751.751 0 0 1 6 2Z"></path> </svg> <span class="color-fg-muted">Activity</span></a> </div> <div class="mt-2"> <a href="/w3c/wcag/custom-properties" data-view-component="true" class="Link Link--muted"><svg text="gray" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-note mr-2"> <path d="M0 3.75C0 2.784.784 2 1.75 2h12.5c.966 0 1.75.784 1.75 1.75v8.5A1.75 1.75 0 0 1 14.25 14H1.75A1.75 1.75 0 0 1 0 12.25Zm1.75-.25a.25.25 0 0 0-.25.25v8.5c0 .138.112.25.25.25h12.5a.25.25 0 0 0 .25-.25v-8.5a.25.25 0 0 0-.25-.25ZM3.5 6.25a.75.75 0 0 1 .75-.75h7a.75.75 0 0 1 0 1.5h-7a.75.75 0 0 1-.75-.75Zm.75 2.25h4a.75.75 0 0 1 0 1.5h-4a.75.75 0 0 1 0-1.5Z"></path> </svg> <span class="color-fg-muted">Custom properties</span></a> </div> <h3 class="sr-only">Stars</h3> <div class="mt-2"> <a href="/w3c/wcag/stargazers" data-view-component="true" class="Link Link--muted"><svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-star mr-2"> <path d="M8 .25a.75.75 0 0 1 .673.418l1.882 3.815 4.21.612a.75.75 0 0 1 .416 1.279l-3.046 2.97.719 4.192a.751.751 0 0 1-1.088.791L8 12.347l-3.766 1.98a.75.75 0 0 1-1.088-.79l.72-4.194L.818 6.374a.75.75 0 0 1 .416-1.28l4.21-.611L7.327.668A.75.75 0 0 1 8 .25Zm0 2.445L6.615 5.5a.75.75 0 0 1-.564.41l-3.097.45 2.24 2.184a.75.75 0 0 1 .216.664l-.528 3.084 2.769-1.456a.75.75 0 0 1 .698 0l2.77 1.456-.53-3.084a.75.75 0 0 1 .216-.664l2.24-2.183-3.096-.45a.75.75 0 0 1-.564-.41L8 2.694Z"></path> </svg> <strong>1.2k</strong> stars</a> </div> <h3 class="sr-only">Watchers</h3> <div class="mt-2"> <a href="/w3c/wcag/watchers" data-view-component="true" class="Link Link--muted"><svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-eye mr-2"> <path d="M8 2c1.981 0 3.671.992 4.933 2.078 1.27 1.091 2.187 2.345 2.637 3.023a1.62 1.62 0 0 1 0 1.798c-.45.678-1.367 1.932-2.637 3.023C11.67 13.008 9.981 14 8 14c-1.981 0-3.671-.992-4.933-2.078C1.797 10.83.88 9.576.43 8.898a1.62 1.62 0 0 1 0-1.798c.45-.677 1.367-1.931 2.637-3.022C4.33 2.992 6.019 2 8 2ZM1.679 7.932a.12.12 0 0 0 0 .136c.411.622 1.241 1.75 2.366 2.717C5.176 11.758 6.527 12.5 8 12.5c1.473 0 2.825-.742 3.955-1.715 1.124-.967 1.954-2.096 2.366-2.717a.12.12 0 0 0 0-.136c-.412-.621-1.242-1.75-2.366-2.717C10.824 4.242 9.473 3.5 8 3.5c-1.473 0-2.825.742-3.955 1.715-1.124.967-1.954 2.096-2.366 2.717ZM8 10a2 2 0 1 1-.001-3.999A2 2 0 0 1 8 10Z"></path> </svg> <strong>216</strong> watching</a> </div> <h3 class="sr-only">Forks</h3> <div class="mt-2"> <a href="/w3c/wcag/forks" data-view-component="true" class="Link Link--muted"><svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-repo-forked mr-2"> <path d="M5 5.372v.878c0 .414.336.75.75.75h4.5a.75.75 0 0 0 .75-.75v-.878a2.25 2.25 0 1 1 1.5 0v.878a2.25 2.25 0 0 1-2.25 2.25h-1.5v2.128a2.251 2.251 0 1 1-1.5 0V8.5h-1.5A2.25 2.25 0 0 1 3.5 6.25v-.878a2.25 2.25 0 1 1 1.5 0ZM5 3.25a.75.75 0 1 0-1.5 0 .75.75 0 0 0 1.5 0Zm6.75.75a.75.75 0 1 0 0-1.5.75.75 0 0 0 0 1.5Zm-3 8.75a.75.75 0 1 0-1.5 0 .75.75 0 0 0 1.5 0Z"></path> </svg> <strong>272</strong> forks</a> </div> <div class="mt-2"> <a class="Link--muted" href="/contact/report-content?content_url=https%3A%2F%2Fgithub.com%2Fw3c%2Fwcag&report=w3c+%28user%29"> Report repository </a> </div> </div> </div> </div> <div class="BorderGrid-row"> <div class="BorderGrid-cell"> <h2 class="h4 mb-3" data-pjax="#repo-content-pjax-container" data-turbo-frame="repo-content-turbo-frame"> <a href="/w3c/wcag/releases" data-view-component="true" class="Link--primary no-underline Link">Releases</a></h2> <a class="Link--primary no-underline" data-pjax="#repo-content-pjax-container" data-turbo-frame="repo-content-turbo-frame" href="/w3c/wcag/tags"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-tag"> <path d="M1 7.775V2.75C1 1.784 1.784 1 2.75 1h5.025c.464 0 .91.184 1.238.513l6.25 6.25a1.75 1.75 0 0 1 0 2.474l-5.026 5.026a1.75 1.75 0 0 1-2.474 0l-6.25-6.25A1.752 1.752 0 0 1 1 7.775Zm1.5 0c0 .066.026.13.073.177l6.25 6.25a.25.25 0 0 0 .354 0l5.025-5.025a.25.25 0 0 0 0-.354l-6.25-6.25a.25.25 0 0 0-.177-.073H2.75a.25.25 0 0 0-.25.25ZM6 5a1 1 0 1 1 0 2 1 1 0 0 1 0-2Z"></path> </svg> <span class="text-bold">2</span> <span class="color-fg-muted">tags</span> </a> </div> </div> <div class="BorderGrid-row"> <div class="BorderGrid-cell"> <h2 class="h4 mb-3"> <a href="/orgs/w3c/packages?repo_name=wcag" data-view-component="true" class="Link--primary no-underline Link d-flex flex-items-center">Packages <span title="0" hidden="hidden" data-view-component="true" class="Counter ml-1">0</span></a></h2> <div class="text-small color-fg-muted" > No packages published <br> </div> </div> </div> <div class="BorderGrid-row" hidden> <div class="BorderGrid-cell"> <include-fragment src="/w3c/wcag/used_by_list" accept="text/fragment+html"> </include-fragment> </div> </div> <div class="BorderGrid-row"> <div class="BorderGrid-cell"> <h2 class="h4 mb-3"> <a href="/w3c/wcag/graphs/contributors" data-view-component="true" class="Link--primary no-underline Link d-flex flex-items-center">Contributors <span title="91" data-view-component="true" class="Counter ml-1">91</span></a></h2> <ul class="list-style-none d-flex flex-wrap mb-n2"> <li class="mb-2 mr-2" > <a href="https://github.com/alastc" class="" data-hovercard-type="user" data-hovercard-url="/users/alastc/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/216630?s=64&v=4" alt="@alastc" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/mbgower" class="" data-hovercard-type="user" data-hovercard-url="/users/mbgower/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/14298245?s=64&v=4" alt="@mbgower" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/w3cgruntbot" class="" data-hovercard-type="user" data-hovercard-url="/users/w3cgruntbot/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/87540780?s=64&v=4" alt="@w3cgruntbot" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/fstrr" class="" data-hovercard-type="user" data-hovercard-url="/users/fstrr/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/20049493?s=64&v=4" alt="@fstrr" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/detlevhfischer" class="" data-hovercard-type="user" data-hovercard-url="/users/detlevhfischer/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/9989439?s=64&v=4" alt="@detlevhfischer" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/traviscibot" class="" data-hovercard-type="user" data-hovercard-url="/users/traviscibot/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/33116358?s=64&v=4" alt="@traviscibot" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/patrickhlauke" class="" data-hovercard-type="user" data-hovercard-url="/users/patrickhlauke/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/895831?s=64&v=4" alt="@patrickhlauke" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/sajkaj" class="" data-hovercard-type="user" data-hovercard-url="/users/sajkaj/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/57234394?s=64&v=4" alt="@sajkaj" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/DavidMacDonald" class="" data-hovercard-type="user" data-hovercard-url="/users/DavidMacDonald/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/2365411?s=64&v=4" alt="@DavidMacDonald" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/jake-abma" class="" data-hovercard-type="user" data-hovercard-url="/users/jake-abma/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/6384002?s=64&v=4" alt="@jake-abma" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/lauracarlson" class="" data-hovercard-type="user" data-hovercard-url="/users/lauracarlson/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/6214544?s=64&v=4" alt="@lauracarlson" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/kwahlbin" class="" data-hovercard-type="user" data-hovercard-url="/users/kwahlbin/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img 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color-bg-success-emphasis"></span> <span style="background-color:#663399 !important;;width: 1.0%;" itemprop="keywords" data-view-component="true" class="Progress-item color-bg-success-emphasis"></span> <span style="background-color:#4F5D95 !important;;width: 0.7%;" itemprop="keywords" data-view-component="true" class="Progress-item color-bg-success-emphasis"></span> </span></div> <ul class="list-style-none"> <li class="d-inline"> <a class="d-inline-flex flex-items-center flex-nowrap Link--secondary no-underline text-small mr-3" href="/w3c/wcag/search?l=html" data-ga-click="Repository, language stats search click, location:repo overview"> <svg style="color:#e34c26;" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-dot-fill mr-2"> <path d="M8 4a4 4 0 1 1 0 8 4 4 0 0 1 0-8Z"></path> </svg> <span class="color-fg-default text-bold mr-1">HTML</span> <span>84.8%</span> </a> </li> <li class="d-inline"> <a 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