AxesDialog-GridLine-Tab
This is, by default, the bottom and top X axes. However, if you have exchanged the X and Y axes (Graph:Exchange X-Y Axis) or if you are editing an axis of a bar, floating bar, or stacked bar graph, then the Horizontal icon is associated with the left and right Y axes.
This is, by default, the left and right Y axes. However, if you have exchanged the X and Y axes (Graph:Exchange X-Y Axis) or if you are editing an axis of a bar, floating bar, or stacked bar graph, then the Vertical icon is associated with the bottom and top X axes.
This is, by default, the front and back Z axes.
After you finish editing the properties of an axis, you can begin editing any other axis in your graph by selecting the appropriate icon from the Selection list box. To prevent your selections from applying to your graph, click the Cancel button at any time during the editing process (but before clicking Apply).
Select the Grid Lines check box to apply the current selection from the Line Color and the Line Type drop-down lists, and the Thickness (pts) combination box for both the Major Grids and the Minor Grids group to: This Layer, This Window, or All Windows (in the current project).