I had to realize that the Satimage XMLLib is not working anymore 
So I’ve to use ASobjC.
One of the things I’m missing there is the equivalent to ‘XMLSetIndentString’ and ‘XMLDisplayXML’ for a formatted text representation.
My internet connection is really slow at the moment so searching there seems to be pretty useless.
Maybe somebody here has an idea.
Could this be what you’re looking for:
theXMLDocument's XMLStringWithOptions:(current application's NSXMLNodePrettyPrint)
Thanks Shane,
While I think it’s not that PrettyPrint I used to have it seems to be the closest I can get now.