Code point
U+2338
Glyph appearance depends on your fonts.
U+2338
SoU+2338 APL FUNCTIONAL SYMBOL QUAD EQUAL 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+2338
9016
⌸
⌸
E2 8C B8
2338
00002338
%E2%8C%B8
\u2338
\u2338
\u2338
\2338