You are actually using them to put redundant information that could be
encoded differently and thus save 4 bits per event records, more or less
what will be needed by most tracers (15 IDs, 1 reserved for an extended
ID field).
So the fact that you use them does not mean they are really required,
and I don't think such duplicated information actually makes things more
solid. Maybe just more obscure ?
Mathieu
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Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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