I should add that TermInfo databases, still present in Linux & macOS system today, are really interesting to compare with modern configuration systems. Nowadays

I should add that TermInfo databases, still present in Linux & macOS system today, are really interesting to compare with modern configuration systems. Nowadays we have no problem using verbose formats like TOML, JSON, YAML, or XML (plists!), because our computers are fast, have lots of storage and memory! We've traded efficiency for convenience. Terminfo is a remnant from when computers were slow and disk/memory constrained, and it made every byte count. It was hard to efficiently encode a database of all the capabilities of the terminals at the time! The trade was in favor of efficiency at the expense of convenience. Look up the manpage for tic, toe, infocmp & family.