Index: src/wp-admin/menu-header.php
===================================================================
--- src/wp-admin/menu-header.php	(revision 26899)
+++ src/wp-admin/menu-header.php	(working copy)
@@ -52,6 +52,7 @@
 		$admin_is_parent = false;
 		$class = array();
 		$aria_attributes = '';
+		$title_attributes = '';
 
 		if ( $first ) {
 			$class[] = 'wp-first-item';
@@ -108,24 +109,30 @@
 			$submenu_items = array_values( $submenu_items );  // Re-index.
 			$menu_hook = get_plugin_page_hook( $submenu_items[0][2], $item[2] );
 			$menu_file = $submenu_items[0][2];
+                        $title_attr = explode(' ',$title);
+                        $title_attributes .= ' title="'.$title_attr[0].'"' ; // title attribute
+                        
 			if ( false !== ( $pos = strpos( $menu_file, '?' ) ) )
 				$menu_file = substr( $menu_file, 0, $pos );
 			if ( ! empty( $menu_hook ) || ( ( 'index.php' != $submenu_items[0][2] ) && file_exists( WP_PLUGIN_DIR . "/$menu_file" ) && ! file_exists( ABSPATH . "/wp-admin/$menu_file" ) ) ) {
 				$admin_is_parent = true;
-				echo "<a href='admin.php?page={$submenu_items[0][2]}'$class $aria_attributes>$arrow<div class='wp-menu-image$img_class'$img_style>$img</div><div class='wp-menu-name'>$title</div></a>";
+				echo "<a href='admin.php?page={$submenu_items[0][2]}'$class $aria_attributes $title_attributes>$arrow<div class='wp-menu-image$img_class'$img_style>$img</div><div class='wp-menu-name'>$title</div></a>";
 			} else {
-				echo "\n\t<a href='{$submenu_items[0][2]}'$class $aria_attributes>$arrow<div class='wp-menu-image$img_class'$img_style>$img</div><div class='wp-menu-name'>$title</div></a>";
+				echo "\n\t<a href='{$submenu_items[0][2]}'$class $aria_attributes $title_attributes>$arrow<div class='wp-menu-image$img_class'$img_style>$img</div><div class='wp-menu-name'>$title</div></a>";
 			}
 		} elseif ( ! empty( $item[2] ) && current_user_can( $item[1] ) ) {
 			$menu_hook = get_plugin_page_hook( $item[2], 'admin.php' );
 			$menu_file = $item[2];
-			if ( false !== ( $pos = strpos( $menu_file, '?' ) ) )
+                        $title_attr = explode(' ',$item[0]);
+                        $title_attributes .= ' title="'.$title_attr[0].'"' ; // title attribute
+                       
+                        if ( false !== ( $pos = strpos( $menu_file, '?' ) ) )
 				$menu_file = substr( $menu_file, 0, $pos );
 			if ( ! empty( $menu_hook ) || ( ( 'index.php' != $item[2] ) && file_exists( WP_PLUGIN_DIR . "/$menu_file" ) && ! file_exists( ABSPATH . "/wp-admin/$menu_file" ) ) ) {
 				$admin_is_parent = true;
-				echo "\n\t<a href='admin.php?page={$item[2]}'$class $aria_attributes>$arrow<div class='wp-menu-image$img_class'$img_style>$img</div><div class='wp-menu-name'>{$item[0]}</div></a>";
+				echo "\n\t<a href='admin.php?page={$item[2]}'$class $aria_attributes $title_attributes>$arrow<div class='wp-menu-image$img_class'$img_style>$img</div><div class='wp-menu-name'>{$item[0]}</div></a>";
 			} else {
-				echo "\n\t<a href='{$item[2]}'$class $aria_attributes>$arrow<div class='wp-menu-image$img_class'$img_style>$img</div><div class='wp-menu-name'>{$item[0]}</div></a>";
+				echo "\n\t<a href='{$item[2]}'$class $aria_attributes $title_attributes>$arrow<div class='wp-menu-image$img_class'$img_style>$img</div><div class='wp-menu-name'>{$item[0]}</div></a>";
 			}
 		}
 
@@ -191,7 +198,7 @@
 		echo "</li>";
 	}
 
-	echo '<li id="collapse-menu" class="hide-if-no-js"><div id="collapse-button"><div></div></div>';
+	echo '<li id="collapse-menu" class="hide-if-no-js"><div id="collapse-button" title="'.esc_html__( 'Collapse menu' ).'"><div></div></div>';
 	echo '<span>' . esc_html__( 'Collapse menu' ) . '</span>';
 	echo '</li>';
 }