10. The program storage device as recited in claim 9, wherein said computing step of said method steps further comprises the step of assembling the document symbol table of each document in the corpus of documents before performing said arranging step.
10. The program storage device as recited in claim 9, wherein said computing step of said method steps further comprises the step of assembling the document symbol table of each document in the corpus of documents before performing said arranging step. 11. The program storage device as recited in claim 10, wherein said method steps further comprises the steps of: forming clusters of similar shapes with symbols in the assembled document symbol tables; and identifying cross-clustering relationships between documents in the corpus of documents with the clusters of similar shapes.