/// <summary>
        /// Removes all of the outline elements in a OneNote page.
        /// </summary>
        /// <param name="path"></param>
        public void ClearContent(string path)
        {
            WriteVerbose("In ClearContent for " + path);
            XmlNode node = getOneNoteNode(path);

            if (node == null)
            {
                WriteInvalidPathError(path);
                return;
            }
            if (node.LocalName != "Page")
            {
                WriteError(new ErrorRecord(new ArgumentException("You may only clear the content of OneNote pages."),
                                           "InvalidArgument",
                                           ErrorCategory.InvalidArgument,
                                           path));
                return;
            }
            WriteVerbose(path + " is a valid OneNote page.");
            string           pageXml;
            ApplicationClass app    = getOneNoteApplication( );
            string           pageId = node.Attributes["ID"].Value;

            WriteVerbose("Page ID is " + pageId);
            app.GetPageContent(pageId, out pageXml, PageInfo.piBasic);
            XmlDocument doc = new XmlDocument( );

            doc.LoadXml(pageXml);
            XmlNamespaceManager nsmgr = new XmlNamespaceManager(doc.NameTable);

            nsmgr.AddNamespace("one", OneNoteXml.OneNoteSchema);
            XmlNodeList outlineElements = doc.SelectNodes("//one:Outline", nsmgr);

            foreach (XmlNode outline in outlineElements)
            {
                string outlineId = outline.Attributes["objectID"].Value;
                WriteVerbose("Deleting outline: " + outlineId);
                app.DeletePageContent(pageId, outlineId, DateTime.MinValue);
            }
        }