## PageLayoutCallbackAr class An argument passed into [IPageLayoutCallback.notify()](../ipagelayoutcallback/notify/#pagelayoutcallbackar) To learn more, visit the [Converting to Fixed-page Format](......api_example_base import ApiExampleBase, ARTIFACTS_DIR save_options = aw.saving...mNum += 1 file_path = Path(ARTIFACTS_DIR) / f'PageLayoutCallback...