code: def footnote(text)
           if !text.nil? and text != ''
              mark = CommandNode.new(self, '\fs16\up6\chftn', nil, false)
              note = CommandNode.new(self, '\footnote {\fs16\up6\chftn}', nil, false)
              note.paragraph << text
              self.store(mark)
              self.store(note)
           end
        end
docs: This method inserts a footnote at the current position in a node.
  
   ==== Parameters
   text::  A string containing the text for the footnote.