 When the legacy GDI Print Path is used, the XPS spool file is used for processing before it is converted to a GDI image to minimize the processing done at raster level.Print schemas provide an XML-based format for expressing and organizing a large set of properties that describe either a job format or print capabilities in a hierarchically structured manner.Print schemas are intended to address the problems associated with internal communication between the components of the print subsystem, and external communication between the print subsystem and applications.