Write

font_size

This indicates the size of the font type used.

{font_size=10}

{font_size=12}

horizontal_position

This defines the horizontal position of the Text_box from the specified reference point. Possible values: "center", "left" or "right".

{horizontal_position="left"}

{horizontal_position="right"}

vertical_position

This defines the vertical position of the Text_box from the specified reference point. Possible values: "base_line", "bottom", "center" or "top".

{vertical_position="center"}

{vertical_position="base_line"}