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[register_nav_menus](http://codex.wordpress.org/Function_Reference/register_nav_menus,"register_nav_menus")
[wp_nav_menu](http://codex.wordpress.org/Function_Reference/wp_nav_menu,"wp_nav_menu")
[in_category](http://codex.wordpress.org/Function_Reference/in_category,"in_category")
[is_category](http://codex.wordpress.org/Function_Reference/is_category,"is_category")
[wp_nav_menu](http://codex.wordpress.org/Function_Reference/wp_nav_menu,"wp_nav_menu")
[in_category](http://codex.wordpress.org/Function_Reference/in_category,"in_category")
[is_category](http://codex.wordpress.org/Function_Reference/is_category,"is_category")