WRF_OPEN_FOR_WRITE_COMMIT
WRF_OPEN_FOR_READ_COMMIT
WRF_INQUIRE_OPENED
WRF_INQUIRE_FILENAME
WRF_IOSYNC
WRF_IOCLOSE
WRF_GET_NEXT_TIME
WRF_GET_PREVIOUS_TIME
WRF_SET_TIME
WRF_GET_NEXT_VAR
WRF_GET_VAR_INFO
WRF_READ_FIELD1
WRF_WRITE_FIELD1
WRF_EXT_WRITE_FIELD