16. The system of claim 15 , further comprising a user interface operably coupled to said processor; and wherein said computer program code is further configured to: displaying for each node of said plurality of nodes a portion of a unique cluster of information represented by said each node in said first or said additional column.
17. The system of claim 16 , and wherein said computer program code is configured to: select said unique cluster of information for said each node; and display said unique cluster of information at a corresponding column position.