Defined in file cdd.asn
C++ class: CCdd_tree

Cdd-tree ::= SEQUENCE {
  name          VisibleString,          -- short name  copied from CD
  id            Cdd-id-set,             -- IDs         copied from CD
  description   Cdd-descr-set OPTIONAL, -- description copied from CD
  parent        Cdd-id     OPTIONAL,    -- CD is the result of a split/merge
  children      Cdd-id-set OPTIONAL,    -- this CD has been split
  siblings      Cdd-id-set OPTIONAL,    -- related CDs (have common hits)
  neighbors     Cdd-id-set OPTIONAL     -- co-occurring CDs (non-overlapping 
                                        -- hits to same sequences)