public CSpecialInstructionsModel(){
  m_descriptions.add(new CCallsDescription());
  m_descriptions.add(new CReadsDescription());
  m_descriptions.add(new CWritesDescription());
}

public CSpecialInstructionsModel ( ) { m_descriptions . add ( new CCallsDescription ( ) ) ; m_descriptions . add ( new CReadsDescription ( ) ) ; m_descriptions . add ( new CWritesDescription ( ) ) ; }
creates a new model object .
