The caption will be have placed at the top of the table
if caption.placement is "top" and at the bottom of the table
if it equals "bottom". Default value is "top".
caption.position
The caption will be have placed at the center of the table
if caption.position is "center" or "c", and at the left side of the table
if it equals "left" or "l", and at the right side of the table
if it equals "right" or "r". Default value is "center".