Line chart properties Labels offset The distance between the plot labels and the X axis. Connected axis X The index of the X axis to connect to the layer. Connected axis Y The index of the Y axis to connect to the layer. Lines connection The shape of the line connection points. None – No connection points. Dot – Round dots connect the lines. Square – Squares connect the lines. Connection size The size of the line connection points. Line The properties for the lines connecting labels with the graph. See Border and fill properties. Area fill Specify a color that is drawn between the line of the layer and the X axis. For example: Note: You can specify to draw the Y axis support lines behind or on top of the plots by setting the Draw behind option in the Properties panel Chart > Support lines category.