# Tier in Forest tree- how to align properly

I've create this tree in LaTex using the package forest. However, I cannot understand why the command tier doesn't work properly. I should have F, P, D and R align on the same line and M, S and L on a different line, just a bit above the other one. The position of m and n is fine. Could you help me? Thanks

\documentclass[border=0.5cm]{standalone}
\usepackage{forest}
\forestset{
nice empty nodes/.style={
for tree={calign=fixed edge angles}, delay={where content={}{shape=coordinate,
for current and siblings={anchor=north}}{}}
}
}
\begin{document}
\begin{forest}
[$\Omega$, nice empty nodes
[G]
[[[F, tier=word][[P, tier=word][[D, tier=word][[R, tier=word][M, tier=word1[m][n]]]]]][[S, tier=word1][L, tier=word1]]]]]]
\end{forest}
\end{document}


If I understood you correctly, than you like achieve the following result:

It is obtained by changing declaration of nodes anchors:

\documentclass[border=0.5cm]{standalone}
\usepackage{forest}

\begin{document}
\begin{forest}
for tree={calign=fixed edge angles,
anchor=north
},
delay={where content={}{shape=coordinate}{}},
%
[$\Omega$
[G]
[
[
[F, tier=word]
[
[P, tier=word]
[
[D, tier=word]
[
[R, tier=word]
[M, tier=word
[m]
[n]
]
]
]
]
]
[
[S, tier=word]
[L, tier=word]
]
]
]
\end{forest}
\end{document}

• That’s perfect!! Thank you very much, you’ve helped me a lot! Nov 30 '20 at 19:39
• @AndreaC, you are welcome! Nov 30 '20 at 19:41