+
+## Advanced Features
+
+- To use `mp` to open files as HTML, install [mdtohtml](https://github.com/sgaunet/mdtohtml) and ensure it is on your PATH.
+- To use `ms` to run an interactive spelling check on all matching files, install [aspell](https://manpages.debian.org/trixie/aspell/aspell.1.en.html) and ensure it is on your PATH.
+