| db_query | includes/database.pgsql.inc | Runs a basic query in the active database. |
| drupal_explode_tags | includes/common.inc | Explode a string of given tags into an array. |
| taxonomy_get_term_by_name | modules/taxonomy/taxonomy.module | Try to map a string to an existing term, as for glossary use. |
| taxonomy_node_delete_revision | modules/taxonomy/taxonomy.module | Remove associations of a node to its terms. |
| taxonomy_node_save | modules/taxonomy/taxonomy.module | Save term associations for a given node. |
| taxonomy_save_term | modules/taxonomy/taxonomy.module | Helper function for taxonomy_form_term_submit(). |