Function: Removes an existing rewrite tag (like %postname%).

Function: Removes a permalink structure.

Function: Resolve numeric slugs that collide with date permalinks.

Function: Add an endpoint, like /trackback/.

Function: Filters the URL base for taxonomies.

Function: Examine a URL and try to determine the post ID it represents.

Function: Adds a rewrite rule that transforms a URL structure to a set of query vars.

Function: Add a new rewrite tag (like %postname%).

Function: Add permalink structure.

Function: Add a new feed type like /atom1/.

Function: Remove rewrite rules and then recreate rewrite rules.