underlying windows pid. Most posix compliant Proc functions expect
the cygwin pid, but several Win32::Process functions expect the
winpid. E.g. C<$$> is the cygwin pid of F</usr/bin/perl>, which is not
-the winpid. Use C<Cygwin::winpid_to_pid()> and C<Cygwin::winpid_to_pid()>
+the winpid. Use C<Cygwin::pid_to_winpid()> and C<Cygwin::winpid_to_pid()>
to translate between them.
=item * Cygwin vs. Windows errors