anchor.diff:  subscription over connections with the same container id, we propose a
   scheme by which such links can be disambiguated while retaining their
   ability to identify the same subscription. In this scheme, only the
  -part of the link name up to (but excluding) the '|' character is used
  +part of the link name up to (but excluding) the \'|\' character is used
   for establishing the idenity of the subscription the link refers
   to. E.g. the link names mysub|foo and mysub|bar would both be
   interpreted as referencing the subscription named 'mysub' (which could
  
positive.code: [1] A link name may have a special suffix added to ensure uniqueness
  for a given container-id(/connection) without altering the subscription it
  identifies. For the purposes of identifying a subscription, anything after
  and including a '|' character in the link name is ignored.
  
  Code Snippets
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negative.code: the identity is independent of the container id.
  
  A global subscription identity is indicated by adding the symbol
  \'global\' to the capabilities for the source.
  
  A subscription may be shared by more than one consuming link. In this
  case, the messages for the subscription are distributed between all
  