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"A user prompt handler is an enumerated attribute defining what action the remote end must take when a user prompt is encountered. The following table lists the keywords and states for the attribute:" How is the user prompt handler defined? Via a capability? The name of the capability should be defined.
Yes, the intention is that it is supposed to be set through a capability. However, I somewhat intentionally left it out when I specced this because the section of processing capabilities (as I’m sure you’ve noticed) is in a pretty terrible shape…