WP_Rewrite::add_endpoint()
Method: Adds an endpoint, like /trackback/.
Source: wp-includes/class-wp-rewrite.php:1731
WP_Rewrite::get_tag_permastruct()
Method: Retrieves the permalink structure for tags.
Source: wp-includes/class-wp-rewrite.php:630
search_rewrite_rules
Filter Hook: Filters rewrite rules used for search archives.
Source: wp-includes/class-wp-rewrite.php:1375
WP_Rewrite::add_permastruct()
Method: Adds a new permalink structure.
Source: wp-includes/class-wp-rewrite.php:1797