Controls the direction in which the text will flow.
Default Value
Blank – equivalent to Left.
Valid Values
Blank or 'down' (top to bottom), 'left' (left to right), 'right' (right to left) or 'up' (bottom to top).
'Down' - Top to bottom.
'Left' – Right to left.
'Right' – Left to right.
'Up' - Bottom to top.