For the avoidance of doubt, it's not at all my intention to make any tests run on Windows 98 other than ddraw (and, hopefully, tests for 16-bit DLLs, but that's another step). While there are some other tests that *could* have value on Windows 98 (kernel32, user32), it'd take a lot more work to make them compatible, and it's not clear that it has value to me. DirectDraw is a bit special in that the modern runtime and drivers aren't very faithful to older ddraw functionality, and often ddraw programs *are* broken on modern Windows. By contrast I haven't yet seen evidence that e.g. user32 has the same problems.