gistfile1.txt

  /**
   * Generate step map and confirmation step map.
   */
  public function init() {
    $i = $j = 1;
    foreach ($this->steps as $step => $info) {
      $this->map[$i++] = $step;
      if ($info['confirmation'] !== FALSE) {
        $this->confirmation_map[$j++] = $step;
      }
    }