User:Saucepan/Test

${\frac {\begin{matrix}1&3&5\\\mid &\mid &\mid \end{matrix}}{\begin{matrix}\mid &\mid &\mid \\2&4&R\end{matrix}}}$

    1   3   5
    │   │   │
    ├─N─┼───┤
    │   │   │
    2   4   R

If the Unicode line drawing characters don't work for enough people, here is an ASCII version of the diagram:

    1   3   5
    |   |   |
    +-N-+---+
    |   |   |
    2   4   R