Big Solidus and Big Reverse Solidus (U+29F8‥U+29F9).

[jmcwilliams403]

• The requested characters are ...
  • Latin
  • Cyrillic
  • Greek
  • Punctuation
  • Diacritic / Mark
  • Symbol
• The requested characters are used in ...
  • The alphabet / character set of a natural language.
  • The alphabet / character set of a constructed language.
  • The alphabet / character set of a transliteration or notation system.
  • Mathematical or other professional use in documents.
  • The symbol set of a programming language. For the languages that support using arbitrary symbols, please provide usages in well-known components or libraries.
  • The symbol set of a command-line program.
• For each character you requested, there is at least a monospace/programming font supports this character. Provide images below.

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These characters are often used in file names as surrogates for ASCII slash/backslash in order show things like dates without conflicting with the standard directory delimiter characters in Unix/DOS systems respectively.

Example: (source)

It is also frequently used in YouTube video titles for this very reason, and therefore may appear in files downloaded via command-line programs usch as ytDownloader as a result.

/\⧸⧹

Julia Mono:

Fairfax HD:

Pragmata Pro: