Any confusion in the manual comes from confusion on my part about how it works. But I figure that if I get confused, so will users, so Jens and I have to go back and forth for a while about a way to handle cross-sprite messages that makes sense for Jens (wrt implementability) and for me (wrt user comprehensibility). This happens sometimes, and we sometimes yell at each other for a while until we settle on something. :~)