static void Main(string[] args) { TextDocument doc = new TextDocument(); Paragraph p1 = new Paragraph(); p1.Add("Hello World"); doc.Body.Add(p1); Text bookmarkText = new Text("Some text here"); BookmarkStart bookmarkStart = new BookmarkStart(); bookmarkStart.Name = "BookmarkName"; bookmarkStart.Add(bookmarkText); BookmarkEnd bookmarkEnd = new BookmarkEnd(); bookmarkEnd.Name = "BookmarkName"; p1.Add(bookmarkStart); p1.Add(bookmarkEnd); doc.Save("c:\\test\\output.odt", true); }