What is the advantage of this format over yaml, json or other structured data formats? This is a crucial question, actually - at a first glance, I would wager

What is the advantage of this format over yaml, json or other structured data formats? This is a crucial question, actually - at a first glance, I would wager to answer: "The Recutils format is not nearly as universal or flexible as YAML/JSON. It essentially supports just one data structure, analogous to a SQL table or a list of dicts. But for that use case (which is quite important) it does seem to a more suitable format, and provides additional features that those formats and their tooling do not."