Code point
U+2377
Glyph appearance depends on your fonts.
U+2377
SoU+2377 APL FUNCTIONAL SYMBOL EPSILON UNDERBAR 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+2377
9079
⍷
⍷
E2 8D B7
2377
00002377
%E2%8D%B7
\u2377
\u2377
\u2377
\2377