anchor.diff:  		m_prev := nil;
   	end;
   
  -	procedure link.setNext(link: link);
  +	procedure link.set_next(link: link);
   	begin
   		m_next := link;
   	end;
   
  -	procedure link.setPrev(link: link);
  +	procedure link.set_prev(link: link);
   	begin
   		m_prev := link;
   	end;
  
positive.code: 		equal := m_link = other.m_link;
  	end;
  
  	function iterator.getLink(): link;
  	begin
  		getLink := m_link;
  	end;
  
  	constructor container.create();
  
negative.code: 		public
  			constructor create(data: longInt);
  			
  			procedure set_next(link: link);
  			procedure set_prev(link: link);
  
  		private
  			m_data: longInt;
  