Early experiments of an editor on top of new format ideas. Certainly less pretty than the old demo (for now, just using developer debug rendering), but with much clearer thoughts about what the format's role is in the compute system. Here's an example of storing visual layout hints inside of the format and altering it on a per-subtree basis.
One important detail of Dion's goals is that it needs to be much easier to build tools than it ever has been with text. This WIP viewer/editor took 2 hours to make today (on top of our internal base layer). That includes the node structure itself, rendering, and layout.