Add .Xrefs to tolower.3 and toupper.3, respectively.
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@ -67,6 +67,7 @@ function returns zero if the character tests false and
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returns non-zero if the character tests true.
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.Sh SEE ALSO
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.Xr ctype 3 ,
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.Xr tolower 3 ,
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.Xr ascii 7
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.Sh STANDARDS
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The
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@ -67,6 +67,7 @@ function returns zero if the character tests false and
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returns non-zero if the character tests true.
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.Sh SEE ALSO
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.Xr ctype 3 ,
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.Xr toupper 3 ,
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.Xr ascii 7
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.Sh STANDARDS
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The
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