26. The apparatus of claim 1 , wherein the system is configured such that multiple hierarchical relationships exist between two line items.
26. The apparatus of claim 1 , wherein the system is configured such that multiple hierarchical relationships exist between two line items. 27. The apparatus of claim 26 , wherein the system is configured such that the task-oriented program is associated with one of the line items of the at least one computer-readable XML-compliant data document for efficiently processing more of the original values at once.