The node-engine applies only a composition signed by the controller or the operator, and when the controller cannot
compose its own fix the operator composes, signs and writes one at the terminal (ADR 0539 clauses 3 and 10).
A node applies one module's composition at a time, so each carries only its own module's resources, checked
resource by resource as the node-engine reads them, and its digest follows its content alone (ADR 0539 clauses 1
and 4). The fixtures are the controller's plan answers for ace and g14, their sealed resources taken out.
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