forum_nodeapi in modules/forum/forum.module
Implementation of hook_nodeapi().
forum_overview in modules/forum/forum.admin.inc
Returns an overview list of existing forums and containers
hook_mail in developer/hooks/core.php
Prepare a message based on parameters; called from drupal_mail().
system_mail in modules/system/system.module
Implementation of hook_mail().
taxonomy_admin_term_edit in modules/taxonomy/taxonomy.admin.inc
Page to edit a vocabulary term.
taxonomy_del_vocabulary in modules/taxonomy/taxonomy.module
Delete a vocabulary.
taxonomy_form in modules/taxonomy/taxonomy.module
Generate a form element for selecting terms from a vocabulary.
taxonomy_node_validate in modules/taxonomy/taxonomy.module
Make sure incoming vids are free tagging enabled.
taxonomy_term_path in modules/taxonomy/taxonomy.module
For vocabularies not maintained by taxonomy.module, give the maintaining module a chance to provide a path for terms in that vocabulary.
taxonomy_vocabulary_confirm_delete in modules/taxonomy/taxonomy.admin.inc
Form builder for the vocabulary delete confirmation form.
taxonomy_vocabulary_confirm_reset_alphabetical in modules/taxonomy/taxonomy.admin.inc
Form builder to confirm reseting a vocabulary to alphabetical order.
template_preprocess_forums in modules/forum/forum.module
Process variables for forums.tpl.php