Code point
U+2357
Glyph appearance depends on your fonts.
U+2357
SoU+2357 APL FUNCTIONAL SYMBOL QUAD DOWNWARDS ARROW 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+2357
9047
⍗
⍗
E2 8D 97
2357
00002357
%E2%8D%97
\u2357
\u2357
\u2357
\2357