Actually, the segment ref's may be valuable for me. I'm using
a pool of fixed buffers that get populated with binary msgs
whose headers have a fixed format. So if I
grab ref's to the header fields of interest when the buffers
are created, my logic may be a bit simpler, and hopefully faster (tho I still need
to pack/unpack(), so it may not be worth the effort).
But still very good to know!
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