| Name | Description |
|---|---|
| Form generation | Functions to enable output of HTML forms and form elements. |
| Input validation | Functions to validate user input. |
| Name | Location | Description |
|---|---|---|
| block_admin_configure | drupal/modules/block.module | Menu callback; displays the block configuration form. |
| node_nodeapi | drupal/modules/node.module | Implementation of hook_nodeapi(). |
| Name | Location | Description |
|---|---|---|
| check_plain | drupal/includes/bootstrap.inc | Encode special characters in a plain-text string for display as HTML. |
| drupal_attributes | drupal/includes/common.inc | Format an attribute string to insert in a tag. |
| form_hidden | drupal/includes/common.inc | Store data in a hidden form field. |
| theme | drupal/includes/theme.inc | Generate the themed representation of a Drupal object. |
| _form_get_error | drupal/includes/common.inc | Return the error message filed against the form with the specified name. |