These changes to Yellow raise quite a lot of specific questions. We address as many of these as we can in what follows, though it isn’t all defined and there is much that will change as we learn how this new Yellow works.

But one way or another, if you are are interested in authoring something with us, or whether you are just curious, it will be helpful to have a look at this next level of detail.

Next page: What do we mean by physical?