## set_text(input_file_name, output_file_name, watermark_text) {#str_str_str} Adds a text watermark into the document. ```python def set_text(self, input_file_name: str, output_file_name: str, wate......is TIFF, the output will be saved as a single multi-frame TIFF...is TIFF, the output will be saved as a single multi-frame TIFF...