This filter is applied within the bcn_breadcrumb_trail_multidim and bcn_breadcrumb_trail_multidim_children classes in the term_parents() and do_archive_by_term() functions. This filter was introduced in version 2.0 with three parameters. It receives three parameters:

• $args – (string)(required) The argument string to be sent into wp_list_categories to generate the second dimension of the trail
• $id – (id)(optional) The ID of the term this breadcrumb is for
• $taxonomy – (string)(optional) The name of the taxonomy the term belongs to

This filter is applied within the bcn_breadcrumb_trail_multidim and bcn_breadcrumb_trail_multidim_children classes in the post_parents() and do_post() functions. This filter was introduced in version 2.0 with two parameters. It receives two parameters:

• $args – (string)(required) The argument string to be sent into wp_list_pages to generate the second dimension of the trail
• $id – (id)(optional) The ID of the post this breadcrumb is for