https://blog.faceutil.com/2017/10/17/%ec%86%90%ec%98%a4%ea%b3%b5-%ec%a0%80%ed%8c%94%ea%b3%84-%ec%82%ac%ec%98%a4%ec%a0%95%ec%9d%98-%ec%84%9c%ec%9c%a0%ea%b8%b0-%ec%84%9c%ec%9c%a0%ed%95%ad%eb%a7%88%eb%a1%9d-mame-%ea%b3%a0%ec%a0%84/