That's the documentation I'd have wanted to see, and viceversa the lack of this
rule implied (to me) that this wouldn't work.

move the dynamic composeable higher-order ghost state logic up so it does not seem to depend on  a language

This reverts commit 7a6d36c6.

docs: move more things to their right place: timeless, persistent; also define and give rules for ghost ownership, view shift, WP