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For version specific documentation see the <a href="https://www.drupal.org/docs" rel="nofollow">Drupal 10</a> and <a href="https://www.drupal.org/docs/7" rel="nofollow">Drupal 7</a> documentation.</p></div></div></div> </div> </div> <div class="panel-separator"></div><div class="panel-pane pane-section-contents" > <div class="pane-content"> <section><h2><a href="/docs/develop/development-tools">Development tools</a></h2><p>Commonly used tools to aid in Drupal development</p><ul class="guide-contents"><li><a href="/docs/develop/development-tools/development-tools-overview">Development tools overview</a></li> <li><a href="/docs/develop/development-tools/drush">Drush</a></li> <li><a href="/docs/develop/development-tools/editors-and-ides" title="">Editors and IDEs</a></li> <li><a href="/docs/develop/development-tools/drupalpod">DrupalPod</a></li> <li><a href="/docs/develop/development-tools/develop-on-windows">Develop on Windows</a></li> <li><a href="/docs/develop/development-tools/set-up-your-browser-to-make-your-work-easy">Set up your browser to make your work easy</a></li> <li><a href="/docs/develop/development-tools/xhprof-code-profiler">XHProf Code Profiler</a></li> <li><a href="/docs/develop/development-tools/xdebug-debugger">Xdebug debugger</a></li> <li><a href="/docs/develop/development-tools/disabling-and-debugging-caching">Disable caching</a></li> <li><a href="/docs/develop/development-tools/enable-verbose-error-logging-for-better-backtracing-and-debugging">Enable verbose error logging for better backtracing and debugging</a></li> <li><a href="/docs/develop/development-tools/phpstan" title="">PHPStan</a></li> <li><a href="/docs/develop/development-tools/working-efficiently-with-the-command-line">Working efficiently with the command line</a></li> <li><a href="/docs/develop/development-tools/cspell" title="Automated code spell checking via cspell">cspell</a></li> </ul></section><section><h2><a href="/docs/develop/using-composer">Using Composer</a></h2><p>Learn how to use Composer to manage Drupal projects and their dependencies.</p><ul class="guide-contents"><li><a href="/docs/develop/using-composer/using-composer-with-drupal">Using Composer in a Drupal project</a></li> <li><a href="/docs/develop/using-composer/composerjson-explained-in-relation-to-drush-make">Composer in relation to Drush Make</a></li> <li><a href="/docs/develop/using-composer/manage-dependencies">Using Composer to Install Drupal and Manage Dependencies</a></li> <li><a href="/docs/develop/using-composer/add-a-composerjson-file">Add a composer.json file</a></li> <li><a href="/docs/develop/using-composer/starting-a-site-using-drupal-composer-project-templates">Starting a Site Using Drupal Composer Project Templates</a></li> <li><a href="/docs/develop/using-composer/managing-dependencies-for-a-contributed-project">Managing dependencies for a contributed project</a></li> <li><a href="/docs/develop/using-composer/managing-dependencies-for-a-custom-project">Managing dependencies for a custom project</a></li> <li><a href="/docs/develop/using-composer/preparing-your-site-for-composer-2">Preparing your site for Composer 2</a></li> <li><a href="/docs/develop/using-composer/tricks-for-using-composer-in-local-development">Tricks for using Composer in local development</a></li> <li><a href="/docs/develop/using-composer/troubleshooting-composer">Troubleshooting Composer</a></li> <li><a href="/docs/develop/using-composer/using-drupals-composer-scaffold">Using Drupal's Composer Scaffold</a></li> <li><a href="/docs/develop/using-composer/using-packagesdrupalorg">Using packages.drupal.org</a></li> <li><a href="/docs/develop/using-composer/using-the-lenient-composer-plugin">Using the Lenient Composer Plugin</a></li> </ul></section><section><h2><a href="/docs/develop/git">Git version control system</a></h2><p>How to install and use Git for version control in Drupal projects</p><ul class="guide-contents"><li><a href="/docs/develop/git/introduction-to-drupal-git">Introduction to Drupal Git</a></li> <li><a href="/docs/develop/git/setting-up-git-for-drupal">Setting up Git for Drupal</a></li> <li><a href="/docs/develop/git/using-git-to-contribute-to-drupal">Using Git to Contribute to Drupal</a></li> <li><a href="/docs/develop/git/using-gitlab-to-contribute-to-drupal" title="">Using GitLab to Contribute to Drupal</a></li> <li><a href="/docs/develop/git/git-for-drupal-project-maintainers">Git for Drupal project maintainers</a></li> <li><a href="/docs/develop/git/common-development-workflow">Common development workflow</a></li> </ul></section><section><h2><a href="/docs/develop/managing-a-drupalorg-theme-module-or-distribution-project">Managing a drupal.org theme, module, or distribution project</a></h2><p>Information on how to create and manage a module, theme, or distribution project hosted on drupal.org</p><ul class="guide-contents"><li><a href="/docs/develop/managing-a-drupalorg-theme-module-or-distribution-project/creating-a-new-project">Creating a new project</a></li> <li><a href="/docs/develop/managing-a-drupalorg-theme-module-or-distribution-project/creating-distributions" title="">Creating distributions</a></li> <li><a href="/docs/develop/managing-a-drupalorg-theme-module-or-distribution-project/documenting-your-project">Documenting your project</a></li> <li><a href="/docs/develop/managing-a-drupalorg-theme-module-or-distribution-project/maintainership">Maintainership</a></li> <li><a href="/docs/develop/managing-a-drupalorg-theme-module-or-distribution-project/packaging-a-distribution">Packaging a distribution</a></li> <li><a href="/docs/develop/managing-a-drupalorg-theme-module-or-distribution-project/security-coverage">Security Coverage</a></li> </ul></section><section><h2><a href="/docs/develop/security">Security</a></h2><p>Best practices for secure sites and code.</p><ul class="guide-contents"><li><a href="/docs/develop/security/handle-user-input-with-care">Handle user input with care</a></li> <li><a href="/docs/develop/security/why-does-drupal-filter-on-output">Why does Drupal filter on output?</a></li> <li><a href="/docs/develop/security/hmac-best-practices">HMAC best practices</a></li> <li><a href="/docs/develop/security/information-disclosure-in-error-messages-not-a-weakness-path-disclosure-sql">Information disclosure in error messages not a weakness (Path disclosure, SQL error messages, etc.)</a></li> <li><a href="/docs/develop/security/your-drupal-site-got-hacked-now-what">Your Drupal site got hacked. Now what?</a></li> </ul></section><section><h2><a href="/docs/develop/issues">Drupal project issues</a></h2><p>All about how the Drupal project uses "issues" to keep track of bugs and feature requests</p><ul class="guide-contents"><li><a href="/docs/develop/issues/overview-of-projects-and-issues">Overview of projects and issues</a></li> <li><a href="/docs/develop/issues/fields-and-other-parts-of-an-issue">Fields and other parts of an issue</a></li> <li><a href="/docs/develop/issues/issue-procedures-and-etiquette">Issue procedures and etiquette</a></li> </ul></section><section><h2><a href="/docs/develop/local-server-setup">Local server setup</a></h2><p>Local server setup for Drupal.</p><ul class="guide-contents"><li><a href="/docs/develop/local-server-setup/docker-based-development-environments-for-macos-linux-and-windows">Docker-based development environments</a></li> <li><a href="/docs/develop/local-server-setup/linux-development-environment">Linux development environments</a></li> <li><a href="/docs/develop/local-server-setup/mac-os-development-environment">Mac OS development environment</a></li> <li><a href="/docs/develop/local-server-setup/windows-development-environment">Windows development environments</a></li> <li><a href="/docs/develop/local-server-setup/managing-mail-handling-for-development-or-testing">Managing Mail Handling for Development or Testing</a></li> <li><a href="/docs/develop/local-server-setup/how-to-create-a-test-site">How to create a test site</a></li> <li><a href="/docs/develop/local-server-setup/easy-installation-of-a-local-development-server-using-drush-and-aegir-up">Easy installation of a local development server using Drush and Aegir-up</a></li> <li><a href="/docs/develop/local-server-setup/docker-with-solr-cloud-integration">Docker with Solr Cloud Integration</a></li> </ul></section><section><h2><a href="/docs/develop/usability-testing">Usability testing</a></h2><p>Guidelines for conducting and recording usability tests and communicating their results. Also, the findings of previous tests.</p><ul class="guide-contents"><li><a href="/docs/develop/usability-testing/usability-testing">Usability testing</a></li> <li><a href="/docs/develop/usability-testing/results">Drupal usability test results</a></li> <li><a href="/docs/develop/usability-testing/conducting-a-usability-test">Tutorial how-to conduct usability testing</a></li> <li><a href="/docs/develop/usability-testing/recording-a-usability-test">Recording a usability test</a></li> <li><a href="/docs/develop/usability-testing/communicating-the-results">Communicate the results effectively with the community</a></li> </ul></section><section><h2><a href="/docs/develop/standards">Coding standards</a></h2><p>The Drupal Coding Standards apply to code within Drupal and its contributed modules.</p><ul class="guide-contents"><li><a href="/docs/develop/standards/php" title="">PHP</a></li> <li><a href="/docs/develop/standards/accessibility" title="">Accessibility</a></li> <li><a href="/docs/develop/standards/css">CSS</a></li> <li><a href="/docs/develop/standards/javascript-coding-standards">JavaScript</a></li> <li><a href="/docs/develop/coding-standards/markdown-coding-standards">Markdown coding standards</a></li> <li><a href="/docs/develop/standards/sql" title="">SQL</a></li> <li><a href="/docs/develop/coding-standards/twig-coding-standards">Twig coding standards</a></li> <li><a href="/docs/develop/coding-standards/drupal-markup-style-guide">Drupal Markup Style Guide</a></li> <li><a href="/docs/develop/standards/spelling">Spelling</a></li> <li><a href="/docs/develop/coding-standards/configuration-file-coding-standards">Configuration file coding standards</a></li> <li><a href="/docs/develop/coding-standards/composer-package-naming-conventions">Composer package naming conventions</a></li> </ul></section><section><h2><a href="/docs/develop/profiling-drupal">Profiling Drupal</a></h2><p>Benchmarking and profiling Drupal.</p><ul class="guide-contents"><li><a href="/docs/develop/profiling-drupal/benchmarking-and-profiling-drupal">Benchmarking and profiling Drupal</a></li> <li><a href="/docs/develop/profiling-drupal/apache-bench-ab">Apache Bench (ab)</a></li> <li><a href="/docs/develop/profiling-drupal/dummy-content-and-common-gotchas">Dummy content and common gotchas</a></li> <li><a href="/docs/develop/profiling-drupal/profiling-memory-usage">Profiling memory usage</a></li> </ul></section><section><h2><a href="/docs/develop/user-interface-standards">User interface standards</a></h2><p>User Interface standards for Drupal.</p><ul class="guide-contents"><li><a href="/docs/develop/user-interface-standards/form-elements">Form elements</a></li> <li><a href="/docs/develop/user-interface-standards/buttons">Buttons</a></li> <li><a href="/docs/develop/user-interface-standards/dropdown-buttons">Dropbutton</a></li> <li><a href="/docs/develop/user-interface-standards/radio-buttons">Radio buttons</a></li> <li><a href="/docs/develop/user-interface-standards/checkbox-and-checkboxes">Checkboxes</a></li> <li><a href="/docs/develop/user-interface-standards/select-list">Select list</a></li> <li><a href="/docs/develop/user-interface-standards/navigation">Navigation</a></li> <li><a href="/docs/develop/user-interface-standards/contextual-links">Contextual Links</a></li> <li><a href="/docs/develop/user-interface-standards/local-action">Local action</a></li> <li><a href="/docs/develop/user-interface-standards/tabs">Tabs</a></li> <li><a href="/docs/develop/user-interface-standards/details">Details</a></li> <li><a href="/docs/develop/user-interface-standards/fieldsets">Fieldsets</a></li> <li><a href="/docs/develop/user-interface-standards/vertical-tabs">Vertical tabs</a></li> <li><a href="/docs/develop/user-interface-standards/listings">Listings</a></li> <li><a href="/docs/develop/user-interface-standards/table">Table</a></li> <li><a href="/docs/develop/user-interface-standards/interface-text">Interface text</a></li> <li><a href="/docs/develop/user-interface-standards/machine-name">Machine name</a></li> <li><a href="/docs/develop/user-interface-standards/tours">Tours</a></li> <li><a href="/docs/extending-drupal/contributed-modules/contributed-module-documentation/tour/tour-text-standards">Tour text standards</a></li> </ul></section><section><h2><a href="/docs/develop/theming-drupal">Theming Drupal</a></h2><p>How to work with Drupal themes.</p><ul class="guide-contents"><li><a href="/docs/develop/theming-drupal/defining-a-theme-with-an-infoyml-file">Defining a theme with an .info.yml file</a></li> <li><a href="/docs/develop/theming-drupal/drupal-theme-folder-structure">Drupal theme folder structure</a></li> <li><a href="/docs/develop/theming-drupal/adding-regions-to-a-theme">Adding Regions to a Theme</a></li> <li><a href="/docs/develop/theming-drupal/adding-assets-css-js-to-a-drupal-theme-via-librariesyml">Adding stylesheets (CSS) and JavaScript (JS) to a Drupal theme</a></li> <li><a href="/docs/develop/theming-drupal/twig-in-drupal">Twig in Drupal</a></li> <li><a href="/docs/develop/theming-drupal/creating-sub-themes">Creating sub-themes</a></li> <li><a href="/docs/develop/theming-drupal/sub-theming-using-stablestable-9-as-a-base-theme">Using Stable/Stable 9 as a base theme</a></li> <li><a href="/docs/8/theming-drupal-8/classy-themes-css-selectors">Classy themes css selectors</a></li> <li><a href="/docs/develop/theming-drupal/using-single-directory-components" title="">Using Single-Directory Components</a></li> <li><a href="/docs/8/theming-drupal-8/including-default-image-styles-with-your-theme">Including Default Image Styles With Your Theme</a></li> <li><a href="/docs/8/theming-drupal-8/including-part-template">Including Part Template</a></li> <li><a href="/docs/8/theming-drupal-8/using-attributes-in-templates">Using attributes in templates</a></li> <li><a href="/docs/8/theming-drupal-8/modifying-attributes-in-a-theme-file">Modifying attributes in a .theme file</a></li> <li><a href="/docs/theming-drupal/working-with-breakpoints-in-drupal">Working with breakpoints in Drupal</a></li> <li><a href="/docs/8/theming-drupal-8/creating-advanced-theme-settings">Creating advanced theme settings</a></li> <li><a href="/docs/8/theming-drupal-8/theming-differences-between-drupal-6-7-8">Theming differences between Drupal 6, 7 & 8</a></li> <li><a href="/docs/theming-drupal/upgrading-classes-on-7x-themes-to-drupal-8-or-later">Upgrading 7.x themes to 8.x</a></li> <li><a href="/docs/theming-drupal/drupal-twig-conversion-instructions-tplphp-to-htmltwig">Drupal Twig conversion instructions (tpl.php to html.twig)</a></li> <li><a href="/docs/develop/theming-drupal/creating-automation-tools-for-custom-themes-gulpjs">Creating automation tools for custom themes (Gulpjs)</a></li> <li><a href="/docs/develop/theming-drupal/sub-theme-inheritance">Sub-Theme inheritance</a></li> <li><a href="/docs/develop/theming-drupal/update-the-throbber">Update the throbber</a></li> <li><a href="/docs/develop/theming-drupal/z-indexes-in-drupal-8">Z-indexes in Drupal 8</a></li> <li><a href="/docs/develop/theming-drupal/add-meta-description-and-title-programmatically">Add meta description and title programmatically</a></li> </ul></section><section><h2><a href="/docs/develop/creating-modules">Creating modules</a></h2><p>This guide includes tutorials and other information that you need to create modules for Drupal.</p><ul class="guide-contents"><li><a href="/docs/develop/creating-modules/getting-started-background-prerequisites">Getting Started - Background & Prerequisites</a></li> <li><a href="/docs/develop/creating-modules/naming-and-placing-your-drupal-module">Naming and placing your Drupal module</a></li> <li><a href="/docs/develop/creating-modules/let-drupal-know-about-your-module-with-an-infoyml-file">Let Drupal know about your module with an .info.yml file</a></li> <li><a href="/docs/develop/creating-modules/include-default-configuration-in-your-drupal-module">Include default configuration in your Drupal module</a></li> <li><a href="/docs/develop/creating-modules/defining-and-using-your-own-configuration-in-drupal">Defining and using your own configuration in Drupal</a></li> <li><a href="/docs/develop/creating-modules/create-a-custom-page-using-a-controller">Create a custom page</a></li> <li><a href="/docs/creating-modules/creating-custom-blocks" title="Turn https://www.drupal.org/node/2465705 into a sub-guide.">Creating custom blocks</a></li> <li><a href="/docs/creating-custom-modules/creating-custom-field-types-widgets-and-formatters" title="Added menu link.">Creating custom field types, widgets, and formatters</a></li> <li><a href="/docs/develop/creating-modules/subscribe-to-and-dispatch-events" title="Get to know Symfony events in Drupal 8 and find out how they relate to Drupal hooks.">Subscribe to and dispatch events</a></li> <li><a href="/docs/develop/creating-modules/building-a-views-display-style-plugin-for-drupal">Building a Views display style plugin for Drupal</a></li> <li><a href="/docs/develop/creating-modules/adding-assets-css-js-to-a-drupal-module-via-librariesyml">Adding stylesheets (CSS) and JavaScript (JS) to a Drupal module</a></li> <li><a href="/docs/develop/creating-modules/basic-module-building-tutorial-lorem-ipsum-generator">Step by step tutorial "Lorem Ipsum"</a></li> <li><a href="/docs/creating-custom-modules/step-by-step-tutorial-hello-world">Step by step tutorial: Hello World</a></li> <li><a href="/docs/develop/creating-modules/understanding-hooks">Understanding hooks</a></li> </ul></section><section><h2><a href="/docs/develop/drupal-apis">Drupal APIs</a></h2><p>Drupal has many APIs that make it easy to alter and extend, and to help developers with common tasks. Learn how to use them in your code</p><ul class="guide-contents"><li><a href="/docs/develop/drupal-apis/access-policy-api">Access Policy API</a></li> <li><a href="/docs/develop/drupal-apis/ajax-api">AJAX API</a></li> <li><a href="/docs/drupal-apis/authentication-api">Authentication API</a></li> <li><a href="/docs/drupal-apis/batch-api">Batch API</a></li> <li><a href="/docs/drupal-apis/block-api">Block API</a></li> <li><a href="/docs/drupal-apis/cache-api">Cache API</a></li> <li><a href="/docs/drupal-apis/deprecated-ckeditor-4-api-drupal-8-and-9" title="">(deprecated) CKEditor 4 API</a></li> <li><a href="/docs/drupal-apis/ckeditor-5-api">CKEditor 5 API</a></li> <li><a href="/docs/drupal-apis/configuration-api">Configuration API</a></li> <li><a href="/docs/develop/drupal-apis/database-api">Database API</a></li> <li><a href="/docs/drupal-apis/entity-api">Entity API</a></li> <li><a href="/docs/drupal-apis/filter-api">Filter API</a></li> <li><a href="/docs/drupal-apis/form-api">Form API</a></li> <li><a href="/docs/develop/drupal-apis/javascript-api">JavaScript API</a></li> <li><a href="/docs/drupal-apis/layout-api">Layout API</a></li> <li><a href="/docs/drupal-apis/logging-api">Logging API</a></li> <li><a href="/docs/drupal-apis/menu-api">Menu API</a></li> <li><a href="/docs/drupal-apis/middleware-api">Middleware API</a></li> <li><a href="/docs/drupal-apis/migrate-api">Migrate API</a></li> <li><a href="/docs/drupal-apis/plugin-api">Plugin API</a></li> <li><a href="/docs/drupal-apis/restful-web-services-api">RESTful Web Services API</a></li> <li><a href="/docs/drupal-apis/render-api">Render API</a></li> <li><a href="/docs/drupal-apis/responses">Responses</a></li> <li><a href="/docs/drupal-apis/routing-system">Routing system</a></li> <li><a href="/docs/develop/drupal-apis/runtime-assertions">Runtime Assertions</a></li> <li><a href="/docs/drupal-apis/serialization-api">Serialization API</a></li> <li><a href="/docs/drupal-apis/services-and-dependency-injection">Services and dependency injection</a></li> <li><a href="/docs/develop/drupal-apis/state-api">State API</a></li> <li><a href="/docs/drupal-apis/text-editor-api">Text Editor API</a></li> <li><a href="/docs/drupal-apis/tour-api">Tour API</a></li> <li><a href="/docs/develop/drupal-apis/translation-api-code-text">Translation API (Code text)</a></li> <li><a href="/docs/develop/drupal-apis/typed-data-api">Typed Data API</a></li> <li><a href="/docs/drupal-apis/update-api">Update API</a></li> </ul></section><section><h2><a href="/docs/develop/automated-testing">Automated testing</a></h2><p>The testing framework in Drupal (Testing module, previously SimpleTest).</p><ul class="guide-contents"><li><a href="/docs/develop/automated-testing/phpunit-in-drupal">PHPUnit in Drupal</a></li> <li><a href="/docs/develop/automated-testing/browser-testing-using-cypress">Browser testing using Cypress</a></li> <li><a href="/docs/automated-testing/converting-simpletests-to-phpunit-tests">Converting SimpleTests to PHPUnit tests</a></li> <li><a href="/docs/develop/automated-testing/javascript-testing-using-nightwatch">JavaScript testing using Nightwatch</a></li> <li><a href="/docs/develop/automated-testing/performance-tests">Performance tests</a></li> <li><a href="/docs/develop/automated-testing/run-core-development-checks">Run core development checks</a></li> <li><a href="/docs/develop/automated-testing/types-of-tests">Types of tests</a></li> </ul></section><section><h2><a href="/docs/develop/upgrading-and-converting-drupal-7-modules">Upgrading and converting Drupal 7 modules</a></h2><p>This guide provides information and specific steps for upgrading contributed and custom modules from Drupal 7 to the latest version.</p><ul class="guide-contents"><li><a href="/docs/converting-drupal-7-modules-to-drupal-8/intro-before-you-start-setting-up-a-drupal-8-module-dev" title="Helpful overall information and environment setup instructions">Intro & Before you start: Setting up a Drupal 8 module dev environment</a></li> <li><a href="/docs/converting-drupal-7-modules-to-drupal-8/step-1-convert-mymoduleinfo-to-mymoduleinfoyml">Step 1: Convert mymodule.info to mymodule.info.yml</a></li> <li><a href="/docs/8/converting-drupal-7-modules-to-drupal-8/step-2-convert-automated-tests-to-drupal-8">Step 2: Convert automated tests to Drupal 8</a></li> <li><a href="/docs/8/converting-drupal-7-modules-to-drupal-8/step-3-convert-hook_menu-and-forms">Step 3: Convert hook_menu() and forms</a></li> <li><a href="/docs/upgrading-and-converting-drupal-7-modules/step-4-convert-drupal-7-variables-to-drupal-8">Step 4: Convert Drupal 7 Variables to Drupal 8 Configuration</a></li> <li><a href="/docs/upgrading-and-converting-drupal-7-modules/step-5-how-to-upgrade-d7-variables-to-d8s-state">Step 5: How to upgrade D7 variables to D8's state system</a></li> <li><a href="/docs/upgrading-and-converting-drupal-7-modules/debugging-drupal-8-module-upgrades">Debugging Drupal 8 module upgrades</a></li> <li><a href="/docs/converting-drupal-7-modules-to-drupal-8/resources-and-tutorials">Resources and tutorials</a></li> <li><a href="/docs/8/converting-drupal-7-modules-to-drupal-8/d7-to-d8-upgrade-generated-html">D7 to D8 Upgrade: Generated HTML</a></li> <li><a href="/docs/develop/upgrading-and-converting-drupal-7-modules/d7-to-d8-tutorial-pathinfo-module">D7 to D8 tutorial: pathinfo module</a></li> <li><a href="/docs/converting-drupal-7-modules-to-drupal-8/d7-to-d8-upgrade-tutorial-pants-module">D7 to D8 upgrade tutorial: Pants module</a></li> <li><a href="/docs/8/converting-drupal-7-modules-to-drupal-8/d7-to-d8-upgrade-fields-widgets-and-formatters">D7 to D8 upgrade: fields, widgets and formatters</a></li> <li><a href="/docs/converting-drupal-7-modules-to-drupal-8/d7-to-d8-upgrade-tutorial-convert-hook_menu-and-hook">D7 to D8 upgrade tutorial: Convert hook_menu() and hook_menu_alter() to Drupal 8 APIs</a></li> <li><a href="/docs/converting-drupal-7-modules-to-drupal-8/wscci-conversion-guide">WSCCI Conversion Guide</a></li> <li><a href="/docs/converting-drupal-7-modules-to-drupal-8/wscci-conversion-guide-pass-1">WSCCI Conversion Guide - Pass 1</a></li> <li><a href="/docs/converting-drupal-7-modules-to-drupal-8/wscci-conversion-guide-pass-2">WSCCI Conversion Guide - Pass 2</a></li> <li><a href="/docs/8/converting-drupal-7-modules-to-drupal-8/wscci-conversion-guide-pass-3">WSCCI Conversion Guide - Pass 3</a></li> <li><a href="/docs/8/converting-drupal-7-modules-to-drupal-8/wscci-conversion-guide-best-practices">WSCCI Conversion Guide - Best practices</a></li> </ul></section><section><h2><a href="/docs/develop/core-modules-and-themes">Core modules and themes</a></h2><p>Drupal core structure and components.</p><ul class="guide-contents"><li><a href="/docs/core-modules-and-themes/basic-structure-of-drupal">Basic structure of Drupal</a></li> <li><a href="/docs/develop/core-modules-and-themes/core-modules">Core modules</a></li> <li><a href="/docs/core-modules-and-themes/core-themes">Core themes</a></li> <li><a href="/docs/core-modules-and-themes/experimental-extensions" title="">Experimental extensions</a></li> <li><a href="/docs/core-modules-and-themes/deprecated-and-obsolete">Deprecated and obsolete modules and themes</a></li> </ul></section><section><h2><a href="/docs/develop/external-libraries-in-core">External Libraries in Core</a></h2><p>Details about list of external PHP and JS libraries core depends on.</p><ul class="guide-contents"><li><a href="/docs/external-libraries-in-core/external-css-libraries">External CSS Libraries</a></li> <li><a href="/docs/develop/external-libraries-in-core/external-javascript-libraries">External JavaScript Libraries</a></li> <li><a href="/docs/external-libraries-in-core/external-php-libraries">External PHP Libraries</a></li> </ul></section><section><h2><a href="/docs/develop/mobile-drupal-sites">Mobile Drupal sites</a></h2><p>Mobile guide for Drupal 8</p><ul class="guide-contents"><li><a href="/docs/develop/mobile-drupal-sites/front-end-performance">Front-end performance</a></li> <li><a href="/docs/develop/mobile-drupal-sites/mobile-testing-tools">Mobile Testing Tools</a></li> <li><a href="/docs/mobile-drupal-sites/mobile-specific-website">Mobile-specific website</a></li> <li><a href="/docs/mobile-drupal-sites/native-mobile-application-development">Native mobile apps</a></li> <li><a href="/docs/mobile-drupal-sites/related-mobile-technologies">Related mobile technologies</a></li> <li><a href="/docs/mobile-drupal-sites/responsive-design-server-side-components-ress">Responsive Design + Server-side Components (RESS)</a></li> <li><a href="/docs/mobile-drupal-sites/responsive-images">Responsive Images</a></li> <li><a href="/docs/develop/mobile-drupal-sites/responsive-web-design">Responsive web design</a></li> <li><a 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