<!-- Component -->
  
  <!ELEMENT Component             (MetaData,
                                   (Neuron
                                   |NeuronType
                                   |ConceptMap)?)>
  
  <!ELEMENT MetaData              (record)>
                                  
    
  
  <!ENTITY % MetaData SYSTEM "IMS_METADATAv1p1.dtd">
  %MetaData;
  
  <!ENTITY % Neuron SYSTEM "Neuron.dtd">
  %Neuron;
  
  <!ENTITY % NeuronType SYSTEM "NeuronType.dtd">
  %NeuronType;
  
  <!ENTITY % ConceptMap SYSTEM "ConceptMap.dtd">
  %ConceptMap;