/// This is a sample code for http://www.aspose.com/Community/Forums/thread/107477.aspx
      ///
      /// The scenario is as follows:
      ///
      /// 1. The customer has a DOC file with footnotes.
      ///
      /// 2. The customer uses Aspose.Words to convert DOC to HTML. Aspose.Words converts
      /// footnotes and endnotes into hyperlinks. There are two hyperlinks per footnote actually.
      /// One link is "forward" from the main text to the text of the footnote.
      /// Another is "backward" from the text of the footnote to the main text.
      ///
      /// 3. The customer uses Aspose.Words to convert HTML back to DOC.
      /// In the current version of Aspose.Words 4.4.3 the hyperlinks do not become footnotes,
      /// they just stay as hyperlink fields in the document. The customer wants
      /// original footnotes to become footnotes during DOC->HTML->DOC conversion.
      ///
      /// This code is a workaround that detects hyperlinks related to footnotes and converts
      /// them into proper footnotes. At some point in the future, this code will not be needed
      /// when Aspose.Words will guarantee footnotes roundtripping.
      ///
      /// This code demonstates some useful techniques, such as enumerating over nodes,
      /// getting field code, removing fields etc.