https://www.proz.com/personal-glossaries/entry/977184-%22doughnut-like-a-pie-chart-but-can-contain-multiple-series%22-%22%D8%AF%D8%A7%D8%A6%D8%B1%D9%8A-%D9%85%D8%AC%D9%88%D9%81-%D9%85%D8%AB%D9%84-%D9%85%D8%AE%D8%B7%D8%B7-%D8%AF%D8%A7%D8%A6%D8%B1%D9%8A%D8%8C-%D9%84%D9%83%D9%86-%D9%8A%D9%85%D9%83%D9%86-%D8%A3%D9%86-%D9%8A%D8%AD%D8%AA%D9%88%D9%8A-%D8%B9%D9%84%D9%89-%D8%B9%D8%AF%D8%A9-%D9%85%D8%AA%D8%B3%D9%84%D8%B3%D9%84%D8%A7%D8%AA%22