ADD_ATTRIB_FILE  8
BROADCAST_SCALAR  2
CONSTRUCT_IO_FIELD  2
DATA_SET  4
DESTROY_FILE  1
DESTROY_IO_FIELD  1
DOCUMENT  2
EXIT_POP  2
EXTRACT_ATTRIB_FILE  4
GET_UNIT  1
POP_IOUNITSFLUSH  4
RELEASE_UNIT  2
TAVG_GLOBAL  1
TAVG_IN_THIS_STREAM  2
TAVG_NORM_FIELD_ALL  1