This action is used for content of post boxes. function my_init(){ remove_action("jaw_postbox_vertical", array("jwRender", "postboxMeta"), 15, 1); add_action("jaw_postbox_vertical", array("jwRender", "postboxMeta"), 9, 1); } add_action('init', 'my_init', 10); The result can look like this: function my_postbox(){ echo "Something special here"; } add_action("jaw_postbox_vertical", "my_postbox", 11, 1); The result can look like this: List of all hooks you can find HERE