libc.info: strlwr

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`strlwr'--force string to lower case

*Synopsis*
     #include <string.h>
     char *strlwr(char *A);
   *Description*
`strlwr' converts each characters in the string at A to lower case.
*Returns*
`strlwr' returns its argument, A.
*Portability*
`strlwr' is not widely portable.
   `strlwr' requires no supporting OS subroutines.