diff --git a/src/wp-content/themes/twentyfifteen/js/functions.js b/src/wp-content/themes/twentyfifteen/js/functions.js
index b560356c1a..558869ac61 100644
--- a/src/wp-content/themes/twentyfifteen/js/functions.js
+++ b/src/wp-content/themes/twentyfifteen/js/functions.js
@@ -60,7 +60,12 @@
 		} );
 	} )();
 
-	// Add or remove ARIA attributes.
+	/**
+	 * @summary Add or remove ARIA attributes.
+	 * Uses jQuery's width() function to determine the size of the window and add
+	 * the default ARIA attributes for the menu toggle if it's visible.
+	 * @since Twenty Fifteen 1.1
+	 */
 	function onResizeARIA() {
 		if ( 955 > $window.width() ) {
 			button.attr( 'aria-expanded', 'false' );
diff --git a/src/wp-content/themes/twentyfourteen/js/functions.js b/src/wp-content/themes/twentyfourteen/js/functions.js
index d50443940a..603e1379a0 100644
--- a/src/wp-content/themes/twentyfourteen/js/functions.js
+++ b/src/wp-content/themes/twentyfourteen/js/functions.js
@@ -121,7 +121,12 @@
 		} );
 	} );
 
-	// Add or remove ARIA attributes.
+	/**
+	 * @summary Add or remove ARIA attributes.
+	 * Uses jQuery's width() function to determine the size of the window and add
+	 * the default ARIA attributes for the menu toggle if it's visible.
+	 * @since Twenty Fourteen 1.4
+	 */
 	function onResizeARIA() {
 		if ( 781 > _window.width() ) {
 			button.attr( 'aria-expanded', 'false' );
diff --git a/src/wp-content/themes/twentythirteen/js/functions.js b/src/wp-content/themes/twentythirteen/js/functions.js
index 522457bf80..eb17a0fb1b 100644
--- a/src/wp-content/themes/twentythirteen/js/functions.js
+++ b/src/wp-content/themes/twentythirteen/js/functions.js
@@ -74,7 +74,12 @@
 		} );
 	} )();
 
-	// Add or remove ARIA attributes.
+	/**
+	 * @summary Add or remove ARIA attributes.
+	 * Uses jQuery's width() function to determine the size of the window and add
+	 * the default ARIA attributes for the menu toggle if it's visible.
+	 * @since Twenty Thirteen 1.5
+	 */
 	function onResizeARIA() {
 		if ( 643 > _window.width() ) {
 			button.attr( 'aria-expanded', 'false' );