18. The computer program product of claim 17 wherein the computer readable program code configured to classify a structural element comprises: computer readable program code configured to identify a presentation attribute for the structural element; computer readable program code configured to identify a classification identifier in dependence upon the presentation attribute; and computer readable program code configured to insert the classification identifier in association with the structural element in the structured document.
17. The computer program product of claim 16 further comprising computer readable program code configured to classify a structural element of the structured document according to a presentation attribute.