wordpress.org/reference/functions/get_available_post_mime_types/) ` wp-includes/post.php ` |  Gets all available post MIME types for a given post type.   
[ edit_post() ](https://developer.wordpress.org/reference/functions/edit_post/) ` wp-admin/includes/post.php ` |  Updates an existing post with values provided in ` $_POST ` .   
[ get_default_post_to_edit() ](https://developer.wordpress.org/reference/functions/get_default_post_to_edit/) ` wp-admin/includes/post.php ` |  Returns default post information to use when populating the “Write Post” form.   
[ wp_ajax_send_attachment_to_editor() ](https://developer.wordpress.org/reference/functions/wp_ajax_send_attachment_to_editor/) ` wp-admin/includes/ajax-actions.php ` |  Handles sending an attachment to the editor via AJAX.   
[ wp_ajax_send_link_to_editor() ](https://developer.wordpress.org/reference/functions/wp_ajax_send_link_to_editor/) ` wp-admin/includes/ajax-actions.php ` |  Handles sending a link to the editor via AJAX.   
[ wp_ajax_heartbeat() ](https://developer.wordpress.org/reference/functions/wp_ajax_heartbeat/) ` wp-admin/includes/ajax-actions.php ` |  Handles the Heartbeat API via AJAX.   
[ wp_ajax_query_themes() ](https://developer.wordpress.org/reference/functions/wp_ajax_query_themes/) ` wp-admin/includes/ajax-actions.php ` |  Handles getting themes from [ themes_api() ](https://developer.wordpress.org/reference/functions/themes_api/) via AJAX.   
[ wp_ajax_wp_remove_post_lock() ](https://developer.wordpress.org/reference/functions/wp_ajax_wp_remove_post_lock/) ` wp-admin/includes/ajax-actions.php ` |  Handles removing a post lock via AJAX.   
[ wp_ajax_query_attachments() ](https://developer.wordpress.org/reference/functions/wp_ajax_query_attachments/) ` wp-admin/includes/ajax-actions.php ` |  Handles querying attachments via AJAX.   
[ wp_ajax_save_attachment_compat() ](https://developer.wordpress.org/reference/functions/wp_ajax_save_attachment_compat/) ` wp-admin/includes/ajax-actions.php ` |  Handles saving backward compatible attachment attributes via AJAX.   
[ wp_ajax_add_menu_item() ](https://developer.wordpress.org/reference/functions/wp_ajax_add_menu_item/) ` wp-admin/includes/ajax-actions.php ` |  Handles adding a menu item via AJAX.   
[ wp_ajax_menu_get_metabox() ](https://developer.wordpress.org/reference/functions/wp_ajax_menu_get_metabox/) ` wp-admin/includes/ajax-actions.php ` |  Handles for retrieving menu meta boxes via AJAX.   
[ wp_ajax_inline_save() ](https://developer.wordpress.org/reference/functions/wp_ajax_inline_save/) ` wp-admin/includes/ajax-actions.php ` |  Handles Quick Edit saving a post from a list table via AJAX.   
[ wp_get_revision_ui_diff() ](https://developer.wordpress.org/reference/functions/wp_get_revision_ui_diff/) ` wp-admin/includes/revision.php ` |  Get the revision UI diff.   
[ wp_prepare_revisions_for_js() ](https://developer.wordpress.org/reference/functions/wp_prepare_revisions_for_js/) ` wp-admin/includes/revision.php ` |  Prepare revisions for JavaScript.   
[ wp_ajax_nopriv_heartbeat() ](https://developer.wordpress.org/reference/functions/wp_ajax_nopriv_heartbeat/) ` wp-admin/includes/ajax-actions.php ` |  Handles the Heartbeat API in the no-privilege context via AJAX .   
[ wp_ajax_ajax_tag_search() ](https://developer.wordpress.org/reference/functions/wp_ajax_ajax_tag_search/) ` wp-admin/includes/ajax-actions.php ` |  Handles tag search via AJAX.   
[ wp_ajax_autocomplete_user() ](https://developer.wordpress.org/reference/functions/wp_ajax_autocomplete_user/) ` wp-admin/includes/ajax-actions.php ` |  Handles user autocomplete via AJAX.   
[ update_core() ](https://developer.wordpress.org/reference/functions/update_core/) ` wp-admin/includes/update-core.php ` |  Upgrades the core of WordPress.   
[ post_slug_meta_box() ](https://developer.wordpress.org/reference/functions/post_slug_meta_box/) ` wp-admin/includes/meta-boxes.php ` |  Displays slug form fields.   
[ page_attributes_meta_box() ](https://develop