[TeX] Editar árboles sintácticos en LaTeX usando Tikz

Explicado en estos dos enlaces: https://tex.stackexchange.com/questions/172415/upside-down-syntax-trees-for-linguistics-with-horizontal-lines \documentclass[tikz,border=5pt]{standalone} \usepackage{forest} % Node shape adapted from http://www.texample.net/tikz/examples/data-flow-diagram/ \makeatletter \pgfdeclareshape{myunderline}{ \inheritsavedanchors[from=rectangle] \inheritanchorborder[from=rectangle] \foreach \from in {center,base,north,north east,east,south east,south,south west,west,north west}{ \inheritanchor[from=rectangle]{\from} } \backgroundpath{ \southwest…