/usr/lib/s9fes/help/string-reverse is in scheme9 2010.11.13-2.
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1 2 3 4 5 6 7 8 9 10 | S9 LIB (string-reverse string) ==> string
(string-reverse! string) ==> unspecific
Create a fresh string and fill it with the characters of
STRING, but in reverse order. STRING-REVERSE! reverses the
characters of STRING in situ, overwriting the original
string.
(string-reverse "rats live on no evil star")
==> "rats live on no evil star"
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