+Support for swapping real and effective user and group IDs is incomplete.
+On WinNT Cygwin provides setuid(), seteuid(), setgid() and setegid().
+However, additional Cygwin calls for manipulating WinNT access tokens
+and security contexts are required.
+
+When building DLLs, `C<dllwrap --export-all-symbols>' is used to export
+global symbols. It might be better to generate an explicit F<.def> file
+(see F<makedef.pl>). Also, DLLs can now be build with `C<gcc -shared>'.
+