[webcomponents] Bikeshed: Nice to have a standard notation to explain a structure of a tree of trees. (#348)

Bikeshed alerting!

Because we don't have a declarative Shadow DOM yet, we use different approaches to draw a tree of trees.

e.g.
- https://drafts.csswg.org/css-scoping/#shadow-pseudoelement
- The example in https://github.com/w3c/webcomponents/blob/gh-pages/proposals/Shadow-DOM-Cascade-Order-in-v1.md

It would be nice to have a standard notation to explain a structure of a tree of trees. :)


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Reply to this email directly or view it on GitHub:
https://github.com/w3c/webcomponents/issues/348