For questions about the schemata package, that helps illustrating the breakdown of concepts and categories in academic texts.
The schemata package offers the \schema command to create diagrams that break down a main concept into its parts and demonstrate the relationship among the components.
\documentclass{standalone}
\usepackage{schemata}
\begin{document}
\schema{\schemabox{main concept}}{\schemabox{first detail\\second detail}}
\end{document}
