Creating PDF Annotations
The following code snippet creates a PDF, adds a small text and places a comment annotation in a given location.
C# sample:
PDFDocument MyPDF = new PDFDocument("Annotations.pdf");
MyPDF.CurrentPage.Body.AddText("Sample comment");
MyPDF.CurrentPage.Body.AddTextAnnotation("Comment", "Comment Annotation", TextAnnotationIcon.Comment, new RectangleF(120,0, 100, 100));
MyPDF.Save();