Code point
U+29DF
Glyph appearance depends on your fonts.
U+29DF
SmU+29DF DOUBLE-ENDED MULTIMAP is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Miscellaneous Mathematical Symbols-B block.
Choose the representation you need, then copy its value.
U+29DF
10719
⧟
⧟
E2 A7 9F
29DF
000029DF
%E2%A7%9F
\u29DF
\u29DF
\u29DF
\29DF