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/**

 * Allows modules to alter the predefined address formats.

 *

 * @param $address_formats

 *   The array of all predefined address formats.

 *

 * @see addressfield_get_address_format()

 */

function hook_addressfield_address_formats_alter(&$address_formats) {

  // Remove the postal_code from the list of required fields for China.

  $address_formats['CN']['required_fields'] = array('locality', 'administrative_area');

}

/**

 * Allows modules to alter the predefined administrative areas.

 *

 * @param $administrative_areas

 *   The array of all predefined administrative areas.

 *

 * @see addressfield_get_administrative_areas()

 */

function hook_addressfield_administrative_areas_alter(&$administrative_areas) {

  // Alter the label of the Spanish administrative area with the iso code PM.

  $administrative_areas['ES']['PM'] = t('Balears / Baleares');

  // Add administrative areas for imaginary country XT, keyed by their

  // imaginary ISO codes.

  $administrative_areas['XT'] = array(

      'A' => t('Aland'),

      'B' => t('Bland'),

  );

}