def make_nested(secs):
root =None
new={}
for s in secs:
ns=NmpmlObject({'tag':"Cell", 'attributes':s.attributes, 'elements':[], 'cdata':None})
ns.data = s.getPoints()
for e in s.elements:
ns.newElement(e)
if not s.parent():
root = ns
new[s.name()]=ns
for name in new:
s = new[name]
if s == root:
continue
p = s.attrib("Parent")
del(s.attributes["Parent"])
s.move(new[p])
return root
