@itemize
@item
This function is missing on some platforms:
-IRIX 5.3, Solaris 2.5.1, Cygwin, BeOS.
+IRIX 5.3, Solaris 2.5.1, Cygwin 1.5.x, BeOS.
@item
On AIX and Windows platforms, @code{wchar_t} is a 16-bit type and therefore cannot
accommodate all Unicode characters.