The data for a FileNode structure (section 2.4.3) that specifies the root object (section 2.1.7) of a revision (section 2.1.8) for a particular root role. The value of the FileNode.FileNodeID field MUST be 0x059.
This structure has the following format.
oidRoot (4 bytes): A CompactID structure (section 2.2.2) that specifies the identity of the root object of the containing revision for the role specified by the RootRole field.
RootRole (4 bytes): An unsigned integer that specifies the role of the root object.