# File lib/maruku/ext/math/mathml_engines/none.rb, line 3
        def convert_to_mathml_none(kind, tex)
                # You can: either return a REXML::Element
                #    return Element.new 'div'    
                # or return an empty array on error
                #    return []  
                # or have a string parsed by REXML:
                tex = tex.gsub('&','&')
                mathml = "<code>#{tex}</code>"
                return Document.new(mathml).root
        end