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                                  HDF5-FILE
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HDF5-FILE
 |_(userblock?,
 |   |_(#PCDATA)
 |  
 |__superblock?,
 |   |_EMPTY
 |  
 |__rootgroup)
     |_(groupptr |
     |   |_EMPTY
     |  
     |__(attribute*,
     |    |_(dataspace,
     |    |   |_(scalardataspace |
     |    |   |   |_EMPTY
     |    |   |  
     |    |   |__simpledataspace |
     |    |   |   |_(dimension)+
     |    |   |       |_EMPTY
     |    |   |      
     |    |   |  
     |    |   |__complexdataspace)
     |    |       |_EMPTY
     |    |      
     |    |  
     |    |__datatype,
     |    |   |_(atomictype |
     |    |   |   |_(integertype |
     |    |   |   |   |_EMPTY
     |    |   |   |  
     |    |   |   |__floattype |
     |    |   |   |   |_EMPTY
     |    |   |   |  
     |    |   |   |__stringtype |
     |    |   |   |   |_EMPTY
     |    |   |   |  
     |    |   |   |__timetype |
     |    |   |   |   |_EMPTY
     |    |   |   |  
     |    |   |   |__bitfieldtype |
     |    |   |   |   |_EMPTY
     |    |   |   |  
     |    |   |   |__opaquetype |
     |    |   |   |   |_EMPTY
     |    |   |   |  
     |    |   |   |__referencetype |
     |    |   |   |   |_(objectreferencetype |
     |    |   |   |   |   |_EMPTY
     |    |   |   |   |  
     |    |   |   |   |__regionreferencetype)
     |    |   |   |       |_EMPTY
     |    |   |   |      
     |    |   |   |  
     |    |   |   |__enumtype)
     |    |   |       |_(enumelement,
     |    |   |       |   |_(#PCDATA)
     |    |   |       |  
     |    |   |       |__enumvalue)+
     |    |   |           |_(#PCDATA)
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     |    |   |      
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     |    |   |__compoundtype |
     |    |   |   |_(field)+
     |    |   |       |_(datatype, ...
     |    |   |       |__fielddims)
     |    |   |           |_(fielddimension)+
     |    |   |               |_EMPTY
     |    |   |              
     |    |   |          
     |    |   |      
     |    |   |  
     |    |   |__vltype)
     |    |       |_(datatype) ...
     |    |      
     |    |  
     |    |__data)
     |        |_(nativehdf5 |
     |        |   |_EMPTY
     |        |  
     |        |__datafromfile |
     |        |   |_(#PCDATA)
     |        |  
     |        |__nodata)
     |            |_EMPTY
     |           
     |       
     |   
     |___group*,
     |    |_(groupptr | ...
     |    |__(attribute*, ...
     |    |___group*, ...
     |    |___dataset*, ...
     |    |___nameddatatype*, ...
     |    |___softlink*)) ...
     |   
     |___dataset*,
     |    |_(datasetptr |
     |    |   |_EMPTY
     |    |  
     |    |__(attribute*, ...
     |    |___dataspace, ...
     |    |___(datatype | ...
     |    |____nameddatatypeptr),
     |    |     |_EMPTY
     |    |    
     |    |___data, ...
     |    |___storagelayout?))
     |         |_(contiguouslayout |
     |         |   |_EMPTY
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     |         |__chunkedlayout |
     |         |   |_(compression,
     |         |   |   |_EMPTY
     |         |   |  
     |         |   |__chunkdimension+)
     |         |       |_EMPTY
     |         |      
     |         |  
     |         |__compactlayout |
     |         |   |_EMPTY
     |         |  
     |         |__externallayout)
     |             |_(externalfileinfo)+
     |                 |_EMPTY
     |                
     |            
     |        
     |   
     |___nameddatatype*,
     |    |_(nameddatatypeptr | ...
     |    |__(attribute*, ...
     |    |___datatype)) ...
     |   
     |___softlink*))
          |_EMPTY