'Return a new ``<Relationship>`` element.'

@staticmethod
def new(rId, reltype, target, target_mode=RTM.INTERNAL):

    xml = (u'<Relationship    xmlns="%s"/>' % nsmap[u'pr'])
    relationship = parse_xml(xml)
    relationship.set(u'Id', rId)
    relationship.set(u'Type', reltype)
    relationship.set(u'Target', target)
    if (target_mode == RTM.EXTERNAL):
        relationship.set(u'TargetMode', RTM.EXTERNAL)
    return relationship
