mesh/cols horrible example in documentation

[Atcold]

I spent a couple of hours figuring this out, and it was not that pleasant…
From the documentation:

We have a 3 × 3 matrix with a table having 3 items per row.
Now, mesh/cols=3 could be any of the 3 3s.

Yes, I read the text, but it's hard to understand.

A better example would use 3 items per row for a 4 × 5 matrix.
In this way one would actually be able to understand what mesh/cols should actually represent.

[Mo-Gul]

Feel free to provide a full better/improved example either here or directly as PR and we'll be happy to incorporate that.

[Atcold]

Cool, I'll do that. I was kinda asking permission / relevance with this issue.