Code point
U+031F
A dotted circle is included to make this combining mark visible.
U+031F
MnU+031F COMBINING PLUS SIGN BELOW is a Unicode 16.0.0 character in the Nonspacing Mark category. It belongs to the Combining Diacritical Marks block.
Choose the representation you need, then copy its value.
U+031F
799
̟
̟
CC 9F
031F
0000031F
%CC%9F
\u031F
\u031F
\u031F
\031F