Return the tag id of this component

Queue a tile for calculation. */

Function to derive the area to be read from input images, based on the requested output area */

Inserts a catenation node to the root of the tree given in `node'. As the left child a new tag with number `tag_id' to `node' is added, and the

Fills the POSIX.2 regmatch_t array according to the TNFA tag and match endpoint values. */

Sets the matching parameters in `reach' to the ones defined in the `pa' array. If `pa' specifies default values, they are taken from `default_p

class-static */