)F FUNCTION -
  THE PRNTHUC COMMAND DISPLAYS CODES USED FOR THE IDENTIFICATION
  OF HYDROLOGIC UNITS IN THE UNITED STATES AND THE CARIBBEAN
  OUTLYING AREAS.

  IT MAY BE DISPLAYED BY STATE, REGION, SUBREGION, ACCOUNTING UNIT,
  OR CATALOGING UNIT.
)X SYNTAX -
       PRNTHUC
    NOTE     - THERE ARE NO OPERANDS ON THIS COMMAND.
)O OPERANDS -
       NONE.
