Expand description
Must-understand feature bits for AgentEnvelope::must_understand. Each
constant names one capability a message may demand a receiver implement.
Defined additively as features land: a newer producer sets a bit an older
receiver does not know, and that receiver rejects rather than mis-handling
the message. No bits are defined yet, so today the marker is the mechanism
in place for the first feature that needs strict handling.
Constants§
- NONE
- A receiver’s full understood set is the OR of the bits it implements.
With no feature bits defined yet, a current build understands none and
only ever sees
must_understand == 0.