Source Reference:

• Component: BuddyPress:: bp-themes

  File: /bp-themes/bp-default/functions.php :: Trac Source Line: 596

  		'depth'      => 0,
  		'echo'       => false,
  		'exclude'    => '',
  		'title_li'   => ''
  	);
  	$menu = wp_page_menu( $pages_args );
  	$menu = str_replace( array( '<div class="menu"><ul>', '</ul></div>' ), array( '<ul id="nav">', '</ul><!-- #nav -->' ), $menu );
  	echo $menu;
  
  	do_action( 'bp_nav_items' );
  }
  endif;
  
  if ( !function_exists( 'bp_dtheme_page_menu_args' ) ) :
  /**
   * Get our wp_nav_menu() fallback, bp_dtheme_main_nav(), to show a home link.
   *
   * @param array $args Default values for wp_page_menu()
   * @see wp_page_menu()
   * @since 1.5