underscore – Control the behaviour of "_" in text

With the package, \_ in text mode (i.e., \textunderscore) prints an underscore so that hyphenation of words either side of it is not affected; a package option controls whether an actual hyphenation point appears after the underscore, or merely a break point.

The package also arranges that, while in text, ‘_’ itself behaves as \textunderscore (the behaviour of _ in maths mode is not affected).

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