Is it possible to control the border thickness of the tables in LyX? In the LyX documentation it written:

\arrayrulewidth is the thickness of the cell border line, the default is 0.4 pt.

But I don't seem to understand how to user \arrayrulewidth. not really familiar with LaTeX. Is it possible to increase the thickness of the borders (make the more bold) in LyX? Also, I read some previous threads but they all solved the problem with LaTeX and not with LyX.


Place your cursor somewhere in your document before your table. Then press Ctrl + L (or go to Insert > TeX Code) and then paste \setlength{\arrayrulewidth}{1.5pt} into it. You can experiment with the 1.5, increasing or decreasing it.

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