Design 47: a placed node's want says self and names no composition; a yes names the composition allowed (issue 1126, ADR 0547 §2, §3)

03-DESIGN/01-to-be/47-delivery-from-commit-to-delivered.md

@@ -749,7 +749,10 @@ backup holder backs up nothing, and the have says so.
   and nothing is asserted (ADR 0547 §5).
 - **The want names the build.** A want `want.<node>.<module>` names the fingerprint, the artifact's digest, the
   source revision and whether the module holds data; the node's own want `want.<node>.node` names the node
-  (ADR 0547 §2).
+  (ADR 0547 §2). A want to a node the catalogue places says so: it carries `self` and names no composition,
+  since the node composes it; every other want still names the one composition it allows, so nothing written
+  before (the controller's bus upgrade among it) reads a want differently. A person's yes to a move the node
+  judged is written into the want as `yes`, the digest of the composition allowed (ADR 0547 §3).
 - **The apply, one module at a time.** At its first start the node agent takes the declaration it kept last as
   what each module runs and writes each have. Then it applies a module only when its want's fingerprint
   differs from what runs or the composition it composed differs from the one it runs, and only that module,