Code point
U+25AF
Glyph appearance depends on your fonts.
U+25AF
SoU+25AF WHITE VERTICAL RECTANGLE is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Geometric Shapes block.
Choose the representation you need, then copy its value.
U+25AF
9647
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E2 96 AF
25AF
000025AF
%E2%96%AF
\u25AF
\u25AF
\u25AF
\25AF