# Python-Skript #

context.f_standard_html_request()
for ob in context.getTreeNodes():
  print "Processing",ob.absolute_url()
  for ob_vers in ob.getObjVersions():
    # Monolingual Attributes.
    v = getattr(ob_vers,'key',None)
    [...do something with v here...]
    setattr(ob_vers,'key',v)
    # Multilingual Attributes.
    for lang in context.getLangIds():
      v = getattr(ob_vers,'key_%s'%lang,None)
      [...do something with v here...]
      setattr(ob_vers,'key_%s'%lang,v)
return printed