Add area, ellipse, point, arrow, distance, polyline, highlight, underline, strikeout, squiggly, text-field, replacement, redaction, watermark, link, and image annotations to a document with GroupDocs.Annotation for Python via .NET.... page_number is 0-based — 0 is the first... opacity = 0.7 area . page_number = 0 area . message = "This...