GroupDocs.Annotation for Python via .NET adds, edits, and removes annotations and markup — area and shape annotations, text highlight/underline/strikeout, watermarks, image and link stamps, and threaded comments — on PDF, DOCX, XLSX, PPTX, images, CAD, Visio, and email files, entirely on-premise without Microsoft Office....GroupDocs.Annotation for Python via .NET adds, edits, and removes annotations and markup — area and shape annotations, text highlight/underline/strikeout, watermarks, image and link stamps, and threaded comments — on PDF, DOCX, XLSX, PPTX, images, CAD, Visio, and email files, entirely on-premise without Microsoft Office.