How much space between elements there should be.

Denotes what size each element should be. Can be overridden by elements using constraints on individual elements.

Determines how many cells over in the FillDirection we go before starting a new row or column. Set to 0 for max cell count. Will be clamped if this is set higher than the parent container allows room for.

Which corner we start laying the elements out from. Can be TopLeft, TopRight, BottomLeft, BottomRight.