https://blog.faceutil.com/2017/04/05/%ed%94%8c%eb%9e%98%ec%8b%9cflash%ec%97%90%ec%84%9c-%ec%82%ac%ec%9d%b4%ed%8a%b8-%eb%98%90%eb%8a%94-%ed%8e%98%ec%9d%b4%ec%a7%80%ec%97%90-%eb%a7%81%ed%81%ac-%ea%b1%b8%ea%b8%b0-%e3%82%b4/