Or applications written for Windows NT that still work - unmodified! - on Windows 10 thanks to layers of compatibility hacks.
I'd call that more "stable API" than anything else --- Win32 is Win32, and while they've added functionality over the years, the basic stuff remains the same.
I'd call that more "stable API" than anything else --- Win32 is Win32, and while they've added functionality over the years, the basic stuff remains the same.