Code point
U+241A
Glyph appearance depends on your fonts.
U+241A
SoU+241A SYMBOL FOR SUBSTITUTE is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Control Pictures block.
Choose the representation you need, then copy its value.
U+241A
9242
␚
␚
E2 90 9A
241A
0000241A
%E2%90%9A
\u241A
\u241A
\u241A
\241A