gopen_gks - opens the GKS package

       To use the GKS C-binding routines, load the ncarg_gks and ncarg_c libraries.

       Copyright (C) 1987-2009
       University Corporation for Atmospheric Research
       The use of this Software is governed by a License Agreement.

UNIX                                               March 1993                                  GOPEN_GKS(3NCARG)

       err_file    (Input)  -  The  place  to  which error messages are to be written.  Typically this should be
                   "stdout".

       mem_unit    (Input) - The dimension of an  internal  buffer.   Currently  in  NCAR  GKS-0A,  mem_unit  is
                   ignored.

       gopen_gks - opens the GKS package

       Online:    gopen_ws(3NCARG),gactivate_ws(3NCARG),gdeactivate_ws(3NCARG),gclose_ws(3NCARG),gclose_gks(3NCARG),gupd_ws(3NCARG),opngks(3NCARG),clsgks(3NCARG),gks(3NCARG),ncarg_gks_cbind(3NCARG)

       Hardcopy: User's Guide for NCAR GKS-0A Graphics; NCAR Graphics Fundamentals, UNIX Version

       #include <ncarg/gks.h>

       void gopen_gks(const char *err_file, size_t mem_unit);

       To get output to any workstation, gopen_gks, gopen_ws and gactivate_ws must be called in that order.  For
       jobs  producing only CGM output, the three calls to gopen_gks, gopen_ws, and gactivate_ws can be replaced
       with a call to the SPPS function c_opngks().