diff -u b/core/modules/system/templates/page.html.twig b/core/modules/system/templates/page.html.twig
--- b/core/modules/system/templates/page.html.twig
+++ b/core/modules/system/templates/page.html.twig
@@ -41,15 +41,15 @@
  * - page.header: Items for the header region.
  * - page.primary_menu: Items for the primary menu region.
  * - page.secondary_menu: Items for the secondary menu region.
+ * - page.tabs: Items for the tabs region.
  * - page.highlighted: Items for the highlighted content region.
+ * - page.actions: Items for the actions region.
  * - page.help: Dynamic help text, mostly for admin pages.
  * - page.content: The main content of the current page.
  * - page.sidebar_first: Items for the first sidebar.
  * - page.sidebar_second: Items for the second sidebar.
  * - page.footer: Items for the footer region.
  * - page.breadcrumb: Items for the breadcrumb region.
- * - page.tabs: Items for the tabs region.
- * - page.actions: Items for the actions region.
  *
  * @see template_preprocess_page()
  * @see html.html.twig
diff -u b/core/themes/bartik/templates/page.html.twig b/core/themes/bartik/templates/page.html.twig
--- b/core/themes/bartik/templates/page.html.twig
+++ b/core/themes/bartik/templates/page.html.twig
@@ -49,7 +49,9 @@
  * - page.primary_menu: Items for the primary menu region.
  * - page.secondary_menu: Items for the secondary menu region.
  * - page.featured_top: Items for the featured top region.
+ * - page.tabs: Items for the tabs region.
  * - page.help: Dynamic help text, mostly for admin pages.
+ * - page.actions: Items for the actions region.
  * - page.content: The main content of the current page.
  * - page.sidebar_first: Items for the first sidebar.
  * - page.sidebar_second: Items for the second sidebar.
@@ -62,8 +64,6 @@
  * - page.footer_fourth: Items for the fourth footer column.
  * - page.footer_fifth: Items for the fifth footer column.
  * - page.breadcrumb: Items for the breadcrumb region.
- * - page.tabs: Items for the tabs region.
- * - page.actions: Items for the actions region.
  *
  * @see template_preprocess_page()
  * @see bartik_preprocess_page()
diff -u b/core/themes/classy/templates/block/block--system-local-actions-block.html.twig b/core/themes/classy/templates/block/block--system-local-actions-block.html.twig
--- b/core/themes/classy/templates/block/block--system-local-actions-block.html.twig
+++ b/core/themes/classy/templates/block/block--system-local-actions-block.html.twig
@@ -3,10 +3,6 @@
 /**
  * @file
  * Theme override for local actions.
- *
- * Available variables:
- * - action_links: Actions local to the page, such as "Add menu" on the menu
- *   administration interface.
  */
 #}
 {% block content %}
diff -u b/core/themes/classy/templates/block/block--system-tabs-block.html.twig b/core/themes/classy/templates/block/block--system-tabs-block.html.twig
--- b/core/themes/classy/templates/block/block--system-tabs-block.html.twig
+++ b/core/themes/classy/templates/block/block--system-tabs-block.html.twig
@@ -3,10 +3,6 @@
 /**
  * @file
  * Theme override for tabs.
- *
- * Available variables:
- * - tabs: The tabs linking to any sub-pages beneath the current page (e.g., the
- *   view and edit tabs when displaying a node).
  */
 #}
 {% block content %}
diff -u b/core/themes/classy/templates/layout/page.html.twig b/core/themes/classy/templates/layout/page.html.twig
--- b/core/themes/classy/templates/layout/page.html.twig
+++ b/core/themes/classy/templates/layout/page.html.twig
@@ -42,14 +42,14 @@
  * - page.primary_menu: Items for the primary menu region.
  * - page.secondary_menu: Items for the secondary menu region.
  * - page.highlighted: Items for the highlighted content region.
+ * - page.tabs: Items for the tabs region.
+ * - page.actions: Items for the actions region.
  * - page.help: Dynamic help text, mostly for admin pages.
  * - page.content: The main content of the current page.
  * - page.sidebar_first: Items for the first sidebar.
  * - page.sidebar_second: Items for the second sidebar.
  * - page.footer: Items for the footer region.
  * - page.breadcrumb: Items for the breadcrumb region.
- * - page.tabs: Items for the tabs region.
- * - page.actions: Items for the actions region.
  *
  * @see template_preprocess_page()
  * @see html.html.twig
diff -u b/core/themes/seven/templates/page.html.twig b/core/themes/seven/templates/page.html.twig
--- b/core/themes/seven/templates/page.html.twig
+++ b/core/themes/seven/templates/page.html.twig
@@ -38,17 +38,17 @@
  *   comment/reply/12345).
  *
  * Regions:
+ * - page.primary_tabs: Items for the primary tabs region.
+ * - page.secondary_tabs: Items for the secondary tabs region.
  * - page.page_top: Items for the header region.
  * - page.highlighted: Items for the highlighted region.
  * - page.help: Dynamic help text, mostly for admin pages.
+ * - page.actions: Items for the action links region.
  * - page.content: The main content of the current page.
  * - page.sidebar_first: Items for the first sidebar.
  * - page.sidebar_second: Items for the second sidebar.
  * - page.page_bottom: Items for the footer region.
  * - page.breadcrumb: Items for the breadcrumb region.
- * - page.primary_tabs: Items for the primary tabs region.
- * - page.secondary_tabs: Items for the secondary tabs region.
- * - page.action_links: Items for the action links region.
  *
  * @see template_preprocess_page()
  * @see seven_preprocess_page()