Humm, this looks and awful like flow charts? What am I missing (apart from the 'Insertion' of macro charts)? All the rules about not 'breaking' visual cohesiveness seem like a plus, although not groundbreaking either. Don't want to sound negative, maybe someone can correct me?
It is a formal specification for a specific kind of flow charts, yes. The specifics of the implementation, the history, and the tooling around it are what's interesting.
Your comment is a bit analogous to someone commenting "Humm, this looks an awful lot like programming?" on a link documenting a forgotten programming language. Well yes, it's true, but it's a tautological statement.
Ah, so this is interesting from a historic perspective. I thought this was being released as a formal method that brought some innovation, as mentionned earlier I had no idea or context other than the slide I went through posted in the link.
