Zebediah Figura (@zfigura) commented about dlls/dxgi/dxgi_private.h:
IDXGIOutput *target; LONG present_count;
- LONG nested_sfs;
FWIW, I'm not a fan of this naming; the abbreviation is not very obvious, and "nested" is misleading since this is true even when there's only one call. I'd advocate for something more like "in_set_fullscreen_state".