Sends additional HTTP headers for caching, content type, etc.

Sets the value of a query variable.

Filters whether to parse the request.

Fires once all query variables for the current request have been parsed.

Filters whether to short-circuit default header status handling.

Filters the query string before parsing.

Filters the query variables allowed before processing.

Filters the array of parsed query variables.

Fires once the requested HTTP headers for caching, content type, etc. have been sent.

Fires once the WordPress environment has been set up.