Code point
U+23B6
Glyph appearance depends on your fonts.
U+23B6
SoU+23B6 BOTTOM SQUARE BRACKET OVER TOP SQUARE BRACKET 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+23B6
9142
⎶
⎶
⎶
E2 8E B6
23B6
000023B6
%E2%8E%B6
\u23B6
\u23B6
\u23B6
\23B6