Allow spilling text into adjacent cells

This option determines whether to display cell content outside of the right boundary when it is too long to be displayed completely in the cell of current size. When it is selected, the cell contents will spill into the cell to the right to display themselves fully when they cannot be displayed completely in the cell. When it is unselected, contents will automatically wrap when displayed partially and the wrapped content may be invisible, so users may need to resize the cell to view them all.