PWG Semantic Model v2 Copyright 2002-2008, IEEE Industry Standards and Technology Organization/ScanService Working Group. All rights reserved - version 1.08 - 18 December 2007 -Editors: Peter Zehler, Ira McDoanald ISSUE: (GP): I did not see a capability for the “light source” this can be changed in scanning and can be done for the document type (paper, transparencies, negatives).