X
I16 = 0 Column of the cell in the nav grid. The client clamps it to the grid width.
One cell of a painted region and the tag that the region writes into it.
I16 = 0 Column of the cell in the nav grid. The client clamps it to the grid width.
I16 = 0 Row of the cell in the nav grid. The client clamps it to the grid height.
U32 = 0 Value that the region writes into the cell, in the group RegionGroupIndex.