Link works with a so called canonical format (CDM/Canonical Data Model). This means that the ingoing format is always transformed to a standard format (via XML) before being transformed to the needed outgoing format (again via XML). This is described under Link Basic Building Blocks.
All the above mentioned files (ingoing, XML, CDM, XML, outgoing) are available under each document in Link. The description of the available information for each document is described under LInk User Guide Tracking Search Detail .