def sf_xpaths
      { title: XPath::TITLE,
        description: XPath::DESC,
        keywords: XPath::KEYWORDS,
        lang: XPath::LANG,
        encode: XPath::ENCODE,
        reply_to: XPath::REPLY_TO,
        author: XPath::AUTHOR,
        image: XPath::IMG }
    end
def sf_xpaths
      { title: XPath::TITLE,
        description: XPath::DESC,
        keywords: XPath::KEYWORDS,
        lang: XPath::LANG,
        encode: XPath::ENCODE,
        reply_to: XPath::REPLY_TO,
        author: XPath::AUTHOR,
        image: XPath::IMG }
    end
Organize XPaths.