GroupDocs.Annotation for Python via .NET adds annotations, markup, and review comments to documents and images through a sIngle, format-Independent API — text markup, shapes, watermarks, image and lInk stamps, text fields, threaded replies, versions, and import/export — and saves the result back to the origInal format....Comparison Product Solution GroupDocs...password-protected files, by passing LoadOptions . When saving, write back...