Nest menus as items to avoid giant navigation menus in your admin.
A small plugin which allows you to use nest shortcodes (i.e. a shortcode within an enclosing shortcode) by implementing a simple do_shortcode filter
Add threaded (nested) reply functionality to bbPress.
Show $wp_filter content in nested html table at the end of admin page.
WpDojoloader allows you to include dojo widgets into wordpress
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