The Lines option resembles the Stepped lines option in that it draws a line connecting all the values displayed. The difference is, however, that data values are represented as points, rather than line segments. As a result, the lines connecting these points are diagonal rather than strictly vertical.
Negative values are allowed for this graph type.
Select Options® 2D options to call up the 2D Options dialog window and choose the graph type.
You can mark these data points with small circular markers using the Markers options. See "The Markers Options" later in this section (Setting 2D Options).
You can use the Zero suppression and Interpolate options described in the sections "Suppress Zeros" and "Interpolate" in the section "The Global Options Menu" to modify the display of zero-values and missing values for this graph type.