stretch options mean what?

[twilit pebble]

what does each of the three stretch options do? Hovering over them doesn't give me an explanation. This stretch can be found in project settings>display>window and then scroll all the way down

[north heath]

https://docs.godotengine.org/en/stable/tutorials/rendering/multiple_resolutions.html

try and make it a habit of looking through the documentation any time you have question about the engine. often, the answers will be there.