calls

the commands the handler sends to another context with SagaContext.call: the compiler lists them as the subscription's calls in the Manifest, which a wait chain follows as it follows derives, and the node does not build when a called context is its own, is unknown, or is one its command caller says it does not reach (wow.peers.<context>.url). A called command needs no command topic, and is not one the handler derives. A command of the handler's own context is derived, never called.