2 @section @code{toupper}
5 POSIX specification: @url{http://www.opengroup.org/susv3xsh/toupper.html}
9 Portability problems fixed by Gnulib:
13 Portability problems not fixed by Gnulib:
16 On Windows platforms, @code{wchar_t} is a 16-bit type and therefore cannot
17 accommodate all Unicode characters.