here's as far we have got.

  > jimi at dxcoms.cern.ch (Jean-Michel Jouanigot) writes:
  > 
  > Daniel,
  > 
  >         This is very clear to me.  The general idea of  having  a
  >         companion  document is fine with me, but the users should
  >         then be aware of which extensions the various tools  will
  >         or  won't  implement.  

A matter for the tool documentation.

  > The  other unresolved issue if how
  >         these "extensions" will be  registered/supported  into/by
  >         the RRs...

A matter for the extension document itself.

Daniel



-------- Logged at  Tue Jun 7 08:57:05 MET DST 1994  ---------