- Choose Plot > Axis Options.
- Click the All tab.
- Click Thickness.
- Version 4.5 – Use the pop-up menu to increase the Grid Thickness.
- Version 4.0 and 4.1 – Increase the Grid Thickness to 200 or 300%.
Depending on the thickness selected, you may not notice the change on the screen; however, there will be a difference when the plot is printed.