settings

Operator 'settings' is called for the show admin pages

You can build a stardard drupal admin settings form. System variables can be set here.

@param $op
  'settings'
@param $arg1
  ???

@return
  A drupal admin form

Here a textarea is presented to set the uc_directdebit_account

<?php
case 'settings':
 
$form['uc_directdebit_account'] = array(
   
'#type' => 'textarea',
   
'#title' => t('Bank deposit account details'),
   
'#description' => t('Bank account details for receiving account (eg account name, account number, bank name).'),
   
'#default_value' => variable_get('uc_directdebit_account', FALSE),
   
'#rows' => 4,
  );
  return
$form;
?>