Line and Filling Bar
The Line and Filling bar contains commands for the current editing mode.
Styles
Specifies whether to show or hide the Styles window, which is where you can assign and organize styles.
Arrow Style
Opens the Arrowheads toolbar. Use the symbols shown to define the style for the end of the selected line.
Line Style
Line Width
Select the width for the line. You can append a measurement unit. A zero line width results in a hairline with a width of one pixel of the output medium.