function phptemplate_settings($saved_settings) {
  // Set the default values for the theme variables
  $defaults = array(
    'garland_shoes' => 1,
  );

  // Merge the saved variables and their default values
  $settings = array_merge($defaults, $saved_settings);

  // Create the form
  $form['garland_shoes'] = array(
    '#type' => 'checkbox',
    '#title' => t('Use ruby red slippers'),
    '#default_value' => $settings['garland_shoes'],
  );

  return $form;
}