def loadSGMLSuperCatalog(filename):
    """Load an SGML super catalog. It won't expand CATALOG or
      DELEGATE references. This is only needed for manipulating
      SGML Super Catalogs like adding and removing CATALOG or
       DELEGATE entries. """
    ret = libxml2mod.xmlLoadSGMLSuperCatalog(filename)
    if ret is None:raise treeError('xmlLoadSGMLSuperCatalog() failed')
    return catalog(_obj=ret)