Solidus

I was curious about the Unicode characters involved in the "shrug" text art:

 ̄\_(ツ)_/ ̄

so I ran it through charnames.pl:

 ̄\_(ツ)_/ ̄
| | 0x0020 "SPACE"
|̄| 0x0304 "COMBINING MACRON"
|\| 0x005C "REVERSE SOLIDUS"
|_| 0x005F "LOW LINE"
|(| 0x0028 "LEFT PARENTHESIS"
|ツ| 0x30C4 "KATAKANA LETTER TU"
|)| 0x0029 "RIGHT PARENTHESIS"
|_| 0x005F "LOW LINE"
|/| 0x002F "SOLIDUS"
| | 0x0020 "SPACE"
|̄| 0x0304 "COMBINING MACRON"

…and that led me to wonder why the official Unicode names for slash and backslash are "solidus" and "reverse solidus". Wiktionary explains the convoluted history — I'll leave it to you to decode the tangle…