View details and encodings for Unicode character U+23F9 Black Square For Stop, located in the Miscellaneous Technical block and Other Symbol category. This character was released in 2014 under Unicode version 7.0.
⏹⏹U+23F9;9209\0023F9\u23F9\x{23F9}\u{23F9}u'\u23F9'E28FB923F9000023F9