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// For complete examples and data files, please go to https://github.com/groupdocs-annotation/GroupDocs.Annotation-for-.NET

                // Get input file stream
                Stream inputFile = new FileStream(CommonUtilities.MapSourceFilePath(filePath), FileMode.Open, FileAccess.ReadWrite);

                // Initialize list of AnnotationInfo
                List<AnnotationInfo> annotations = new List<AnnotationInfo>();

                // Area annotation with 2 replies
                AnnotationInfo areaAnnnotationforWords = new AnnotationInfo()
                {
                    AnnotationPosition = new Point(852.0, 59.0),
                    Replies = new AnnotationReplyInfo[]
                {
                    new AnnotationReplyInfo
                    {
                        Message = "Hello!",
                        RepliedOn = DateTime.Now,
                        UserName = "John"
                    },
                    new AnnotationReplyInfo
                    {
                        Message = "Hi!",
                        RepliedOn = DateTime.Now,
                        UserName = "Judy"
                    }
                },
                    BackgroundColor = 11111111,
                    Box = new Rectangle(300f, 200f, 88f, 37f),
                    PageNumber = 0,
                    PenColor = 2222222,
                    PenStyle = 1,
                    PenWidth = 1,
                    Type = AnnotationType.Area,
                    CreatorName = "Anonym A."
                };
                // Add annotation to list
                annotations.Add(areaAnnnotationforWords);

                // Export annotation and save output file
                CommonUtilities.SaveOutputDocument(inputFile, annotations, DocumentType.Words);