Support for lines between columns and rows in matrices

[ForNeVeR]

Discussed in #476

^{Originally posted by pomaton12 November 26, 2023}

Hello, I would like to know if you can write these types of matrices, that is, place a vertical and horizontal line like in Latex, I have tried every possible way but I did not achieve my purpose. I am working in c# wpf WpfMath

M =\left[ \begin{array}{c c c |c} 1 & 2 & 2 & 2\\ 3 & 4 & 2 & 2\\ \hline 5 & 6 & 2 & 2\\ \end{array} \right]

M =\left[ \begin{array}{c c c :c} 1 & 2 & 2 & 2\\ 3 & 4 & 2 & 2\\ \hdashline 5 & 6 & 2 & 2\\ \end{array} \right]