tdg_xml_nvarray
tdg_xml_nvarray(fp, pad, pname, TDG_XML_STRING_ARR);
tdg_xml_nvarray(fp, pad, pname, TDG_XML_NVLIST_ARR);
tdg_xml_nvarray(fp, 2, TDG_XML_PGROUPS, TDG_XML_NVLIST_ARR);
tdg_xml_nvarray(fp, 6, TDG_XML_PVALS, TDG_XML_NVLIST_ARR);