Or for Chinese, Japanese, Hindi, Greek, Ethiopic, Thai, Korean, etc., etc. ... basically, for any text that uses characters other than the Latin and Cyrillic ch

Or for Chinese, Japanese, Hindi, Greek, Ethiopic, Thai, Korean, etc., etc. ... basically, for any text that uses characters other than the Latin and Cyrillic character sets that the Flow Circular font covers. (Simple example: try https://www.unicode.org/standard/WhatIsUnicode-more.html https://www.unicode.org/standard/WhatIsUnicode-more.html and observe the list of language links on the left.)