Code point
U+231D
Glyph appearance depends on your fonts.
U+231D
SoU+231D TOP RIGHT CORNER is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Miscellaneous Technical block.
Choose the representation you need, then copy its value.
U+231D
8989
⌝
⌝
⌝
E2 8C 9D
231D
0000231D
%E2%8C%9D
\u231D
\u231D
\u231D
\231D