GSFAIS (Set fill area interior style) - sets the fill style of polygons drawn with GFA.

       To use GKS routines, load the NCAR GKS-0A library ncarg_gks.

       #include <ncarg/gks.h>

       void gset_fill_int_style(Gfill_int_style fill_int_style);

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

UNIX                                               March 1993                                     GSFAIS(3NCARG)

       INTS        (Integer,  Input)  - Gives the style of fill to be used in subsequent calls to the GFA output
                   primitive. Options are:

                   0      Hollow fill (the default)

                   1      Solid fill

                   2      Pattern fill (not implemented in NCAR GKS).

                   3      Hatch fill

       GSFAIS (Set fill area interior style) - sets the fill style of polygons drawn with GFA.

       Online: gfa, gsfasi, gscr, gsfaci, gqfais, gqfasi, areas, gset_fill_int_style

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

       CALL GSFAIS (INTS)

       For fill style "Hatch", GSFASI should be used to specify the  type  of  hatch  pattern  used  (horizontal
       lines, vertical lines, etc.)

       Note:  If  you  call GFA and generate an output graphic only to find that you have a closed curve with no
       fill, you probably have allowed the fill choice to default to hollow fill (no fill).