underscore

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underscore

(character)
_, ASCII 95.

Common names: ITU-T: underline; underscore; underbar; under. Rare: score; backarrow; skid; INTERCAL: flatworm.

See also left arrow.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

underscore

The underscore character (_) is often used to make file, field and variable names more readable when blank spaces are not allowed. For example, NOVEL_1A.DOC, FIRST_NAME and Start_Routine.
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