External Context سياق خارجي
http://m.arabi21.com/story/840016/%D9%83%D9%8A%D9%81-%D9%86%D9%81%D9%87%D9%85-%D8%A7%D9%84%D9%82%D9%85%D8%B9-%D8%A7%D9%84%D8%B5%D9%8A%D9%86%D9%8A-%D8%B6%D8%AF-%D9%85%D8%B3%D9%84%D9%85%D9%8A-%D8%A7%D9%84%D8%A5%D9%8A%D8%BA%D9%88%D8%B1#category_2