It's interesting. can you have @js more than once? can you have @app more than once? pretty sure ಠ-ಠ is a valid app name, but ಠ_ಠ isn't. i also can't quite tell how to say map of maps. i'd guess it's

    @this-section-has-a-map
    hello-world
      name child-map
        ಠ-ಠ a
        ಠ_ಠ b

but it's hard to tell. Also, i'm not exactly a fan of { "_comment": "this is a comment" }, but i've run into several situations with yaml where i want to build a tool to rewrite a bunch at once, but since comments have no representation in the parse tree i have to do goofy vim macros to do my edits. since _comment is in the tree, i can add more keys without trashing the existing comments.