increasing the thickness of the line between panels of a multi-panel plot

[#1]

So in the graph builder, when we create multi-panel plots, there is a thin line that marks the boundary between adjacent panels. When I turn on gridlines, these thin lines become indistinguishable from the gridlines, and it isn't clear where one panel ends and another begins. Is there a way to adjust the thickness of the line that marks panel boundaries?

[#2]

Hi @Cookiemole,

Absolutely! You can set the number of pixels for the border by right-clicking a border (or in the blank space under the legend), or by going to the Red Triangle next to Graph Builder > Graph Spacing. You can also set the color by right-clicking a border (or in the blank space under the legend) then selecting Graph Spacing Color.