Robuta

https://www.fileformat.info/info/unicode/char/00C4/index.htm Unicode Character 'LATIN CAPITAL LETTER A WITH DIAERESIS' (U+00C4) latin capital letter a unicode character diaeresis https://help.dyalog.com/19.0/Content/Language/Symbols/Jot%20Diaresis.htm Jot Diaeresis jot diaeresis