	subroutine ekeyopn
*
*
*  This software was developed by the Thermal Modeling and Analysis
*  Project(TMAP) of the National Oceanographic and Atmospheric
*  Administration's (NOAA) Pacific Marine Environmental Lab(PMEL),
*  hereafter referred to as NOAA/PMEL/TMAP.
*
*  Access and use of this software shall impose the following
*  obligations and understandings on the user. The user is granted the
*  right, without any fee or cost, to use, copy, modify, alter, enhance
*  and distribute this software, and any derivative works thereof, and
*  its supporting documentation for any purpose whatsoever, provided
*  that this entire notice appears in all copies of the software,
*  derivative works and supporting documentation.  Further, the user
*  agrees to credit NOAA/PMEL/TMAP in any publications that result from
*  the use of this software or in any product that includes this
*  software. The names TMAP, NOAA and/or PMEL, however, may not be used
*  in any advertising or publicity to endorse or promote any products
*  or commercial entity unless specific written permission is obtained
*  from NOAA/PMEL/TMAP. The user also understands that NOAA/PMEL/TMAP
*  is not obligated to provide the user with any support, consulting,
*  training or assistance of any kind with regard to the use, operation
*  and performance of this software nor to provide the user with any
*  updates, revisions, new versions or "bug fixes".
*
*  THIS SOFTWARE IS PROVIDED BY NOAA/PMEL/TMAP "AS IS" AND ANY EXPRESS
*  OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
*  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
*  ARE DISCLAIMED. IN NO EVENT SHALL NOAA/PMEL/TMAP BE LIABLE FOR ANY SPECIAL,
*  INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
*  RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
*  CONTRACT, NEGLIGENCE OR OTHER TORTUOUS ACTION, ARISING OUT OF OR IN
*  CONNECTION WITH THE ACCESS, USE OR PERFORMANCE OF THIS SOFTWARE. 
*
*
C**    @(#)ekeyopn.F	1.1.1.1    7/30/88
C**
C**
C***********************************************************************        C**
C**                 EPIC
C**
C***********************************************************************        C**
C**
c
c  Opens EPICKEY file on Unit lun21. Contains CTD Cast Data Header variable
c  codes.
c
	common /epiclun/ lun1,lun11,lun21
c
	if (lun21 .eq. 0) lun21 = 21
c
#ifdef unix
	OPEN (UNIT=LUN21, 
     *	FILE='/usr/local/lib/epic/epickey.values',
     *	FORM='FORMATTED', STATUS='OLD')
#else
        OPEN (UNIT=LUN21, FILE='DISK1:[NNS.EPIC]EPICKEY.DAT',
     1 ACCESS='KEYED', FORM='FORMATTED', KEY=(1:4:CHARACTER),
     2 ORGANIZATION='INDEXED', RECL=132, RECORDTYPE='VARIABLE',
     3 SHARED, READONLY, STATUS='OLD', CARRIAGECONTROL='LIST')
#endif
C
	return
	end
