| base_path | drupal/includes/common.inc | Returns the base URL path of the Drupal installation.
At the very least, this will always default to /. |
| check_plain | drupal/includes/bootstrap.inc | Encode special characters in a plain-text string for display as HTML. |
| check_url | drupal/includes/common.inc | Prepare a URL for use in an HTML attribute. Strips harmful protocols. |
| drupal_attributes | drupal/includes/common.inc | Format an attribute string to insert in a tag. |
| url | drupal/includes/common.inc | Generate a URL from a Drupal menu path. Will also pass-through existing URLs. |