5-1   :  Done
5-2   :  Done, question on xincluded source documents
5-3   :  Done
5-4-1 :  Done, variation that uses explict input labels
5-4-2 :  Done, variation that uses collections
5-5   :  Done
5-6   :  Done
5-7   :  Done
5-8   :  Done
5-9   :  Done
5-10  :  Done
5-11  :  Done
5-12  :  
5-13  :
5-14  :  Done
5-15-1:  Done, parse variation
5-15-2:  Done, serialize variation
5-16  :
5-17  :
5-18  :
5-19  :
5-20  :
5-21  :
5-22  :
5-23  :
5-24  :
5-25  :
5-26  :
5-27  : Done
5-28  : Done.  I excluded all the transform bits and made other assumptions about the schemata
5-29  : Done
5-30  : Done
5-31  :
5-32  :