/mdn2/en-US/docs/Mozilla/Add-ons/WebExtensions/user_interfaceuser_interface
Browser_styles Context_menu_items devtools_panels Extension_pages Notifications Omnibox Options_pages Page_actions Popups Sidebars Toolbar_button
/mdn2/en-US/docs/Mozilla/Add-ons/WebExtensions/user_interface/Context_menu_itemsContext_menu_items
/mdn2/en-US/docs/Mozilla/Add-ons/WebExtensions/user_interface/devtools_panelsdevtools_panels
/mdn2/en-US/docs/Mozilla/Add-ons/WebExtensions/user_interface/Extension_pagesExtension_pages
/mdn2/en-US/docs/Mozilla/Add-ons/WebExtensions/user_interface/NotificationsNotifications
/mdn2/en-US/docs/Mozilla/Add-ons/WebExtensions/user_interface/OmniboxOmnibox
/mdn2/en-US/docs/Mozilla/Add-ons/WebExtensions/user_interface/Page_actionsPage_actions
/mdn2/en-US/docs/Mozilla/Add-ons/WebExtensions/user_interface/PopupsPopups
/mdn2/en-US/docs/Mozilla/Add-ons/WebExtensions/user_interface/SidebarsSidebars
/mdn2/en-US/docs/Mozilla/Add-ons/WebExtensions/user_interface/Toolbar_buttonToolbar_button