This grid automatically resizes rows to fit their content.
It does this by setting the autoRowHeights property to true.
Row heights are updated when the grid is bound, when cells are edited, and when columns are resized.
To see how this works, try resizing the "Countries" column or editing some cells in that column.
The autoRowHeights property is especially useful in grids that have columns with wrapping text (wordWrap = true).