View details and encodings for Unicode character U+23A1 Left Square Bracket Upper Corner, located in the Miscellaneous Technical block and Math Symbol category. This character was released in 2002 under Unicode version 3.2.
⎡⎡U+23A1;9121\0023A1\u23A1\x{23A1}\u{23A1}u'\u23A1'E28EA123A1000023A1