"Map from this message" only shows message headers. Perhaps it could do the reverse of "See the entire thread from this message", so it would "Show entire thread up to this message", showing the tree and the messages.

I think that would be really cool...

>Hi Steve,
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>Essentially I wanted to do the reverse of the "map from this message". IOW, go back a few messages to reclaim the gist of the current conversation.
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