/**
   * Inserts a row
   *
   * @param row the row to insert
   */
  public void insertRow(int row) {
    if (formula1 != null) {
      formula1.rowInserted(0, row, true);
    }

    if (formula2 != null) {
      formula2.rowInserted(0, row, true);
    }

    if (row1 >= row) {
      row1++;
    }

    if (row2 >= row && row2 != MAX_ROWS) {
      row2++;
    }
  }