Code point
U+2518
Glyph appearance depends on your fonts.
U+2518
SoU+2518 BOX DRAWINGS LIGHT UP AND LEFT is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Box Drawing block.
Choose the representation you need, then copy its value.
U+2518
9496
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┘
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E2 94 98
2518
00002518
%E2%94%98
\u2518
\u2518
\u2518
\2518