' fall back for main menu ' question!

CMS & WordPress
1

Hi !

I was wondering, is a Fall Back Menu normal practice, what I mean is, do all WordPress Theme’s need it?

And if so, is there a current example on how to create a Fall Back Menu?

This is what I have within my funtions.php file:


// This theme uses wp_nav_menu() in one location.
	register_nav_menus( array(
		'primary' => __( 'Primary Navigation', 'XXXXXXXXX' ),
	) );

And in my header.php file:


<nav>
   <?php wp_nav_menu( array('theme_location' => 'Primary', 'menu' =>  'Primary','container' => '', 'items_wrap' => '<ul class="main">%3$s</ul>'  )); ?>
</nav>

Any suggestions are welcome.

Thank you