Feedback on page SDL3/README-migration

[WrapEarnPass]

There does not appear to be any note here about SDL_GetDisplayUsableBounds
sdl2/SDL_GetDisplayUsableBounds(0, was always the default display.

The primary display (displayIndex zero) is always located at 0,0.

with SDL3, that is now always invalid.

SDL_GetDisplayUsableBounds(SDL_DisplayID displayID
typedef Uint32 SDL_DisplayID;

Remarks

If the display is disconnected and reconnected, it will get a new ID.

The value 0 is an invalid ID.

Readme-migration does note that SDL_DisplayID is invalid, but it doesnt note that SDL_GetDisplayUsableBounds will compile and execute with no warnings that the SDL2 form is entirely invalid.

[WrapEarnPass]

an addendum. SDL_GetDisplayUsableBounds also swapped from return 0 on success to return true on success. My bad there, I failed to update its test condition, and it does in fact return false on SDL_DisplayID==0.
The note still may be helpful. Either in https://wiki.libsdl.org/SDL3/README-migration or inline as a note on https://wiki.libsdl.org/SDL3/SDL_GetDisplayUsableBounds