6. The computer implemented method of claim 2 , further comprising: displaying the nodes; and suppressing nodes associated with a presumed document from the display.
7. The computer implemented method of claim 6 , further comprising: affiliating each displayed node with header parameters of each document associated with said displayed node; and affiliating header parameters of documents associated with suppressed nodes with a node associated with a document from which the presumed document associated with said suppressed node is constructed.