Hi hear is a other strange thing. If you work with html Bullet list, then are the singel Elements in the Bookmark list. see the exampel Code Pdf pdf1 = new Pdf(); pdf1.IsBookmarked = true; Section sec1 = pdf1.Secti…...Paragraphs.Add(desc); //work but in...desc.IsInList = false; sec1.Paragraphs.Add(desc); // Save the resultant...