Page Comparison

1 - Denotes the 1st level of content hierarchy under the root node which represents document categories. Here its is "Work" 

2 - Denotes the 2nd level which represents the document types such as "Bibliographic" and "Instance"

3 - Denotes the 3rd level which represents the document formats such as "MARC" and "Dublin-core" for Bibliographic records and "OLEML" (OLE defined) for Instance records.

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1 - Denotes the content hierarchy under the MARC node

2 - Denotes a 2nd level of MARC nodes

3 - Denotes the nodes that will hold the actual MARC records