Riser line width Set the width of the riser. Riser line style Set the riser line style. Display Toggle the display of the error bar. Select the coordinate system to use when interpreting the legend x, and legend y items described below. Either the world or viewport coordinates.
Legends placed in viewport coordinates make the legends stay put as the plot scale changes.
Legends placed in world co-ordiantes will float as the graph scaling is changed. Legend gap specify the vertical gap between legend entries Legend length specify how long the line representing the set should be. Frame toggle a box drawn around the legend. The three items below set the line color, line width, and line style of the box. Fill frame toggle the fill of the box around the legend.