This is such a complicated domain that you have to have some kind of function-call looking syntax for extensibility (compared to basic lightweight markup which

This is such a complicated domain that you have to have some kind of function-call looking syntax for extensibility (compared to basic lightweight markup which doesn’t). So that’s fine. {rolename}`and here is my role's content!` I would personally prefer something like Tex here. You just need backslashes, square brackets and braces. I guess this is inspired by Restructured Text. Not a fan of that—it looks like the most punctuation-heavy lightweight markup language.