More Information

• See register_nav_menus() for creating multiple menus at once.
• This function automatically registers custom menu support for the theme therefore you do not need to call add_theme_support( 'menus' );
• This function actually works by simply calling register_nav_menus() in the following way:

  register_nav_menus( array( $location => $description ) );
  

• You may use wp_nav_menu() to display your custom menu.