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!                     version 3; Last Modified: May 7, 2008.
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#if defined (DOC)
*
***comdeck grid.cdk
*
*revision
* v2_30 - V. Lee                 - moved definition of MAXGRID1 to dimout.cdk
* v2_30                          - Added Grid_phi_ig2
* v3_30 - R. McTaggart-Cowan     - Added user defined tag extension
*______________________________________________________________________
*                                                                      |
*  VARIABLES FOR DEFINITION OF THE OUTPUT GRIDS (set_grid)             |
*______________________________________________________________________|
*                    |                                                 |
* NAME               | DESCRIPTION                                     |
*--------------------|-------------------------------------------------|
* MAXGRID1           | maximum number of grids that can be defined     |
* Grid_sets          | total number of sets of defined output grids    |
*  The following variables carry values for each defined output grid   |
* Grid_id            | Grid_id(i) are the id of each defined grid      |
* Grid_niout         | X grid dimension                                |
* Grid_njout         | Y grid dimension                                |
* Grid_typ_s         | grid type for the data records                  |
* Grid_gxtyp_s       | grid type for the positional record             |
* Grid_ig1           | ig1 descriptor (or ip1 of positional record)    |
* Grid_ig2           | ig2 descriptor (or ip2 of positional record)    |
* Grid_ig3           | ig3 descriptor (or ip3 of positional record)    |
* Grid_ig4           | ig4 descriptor                                  |
* Grid_phi_ig2       | ig2 descriptor for the PHI output grid          |
* Grid_ixg           | ig1,ig2,ig3,ig4 descriptors:positional records  |
* Grid_x0            | x origin of output grid                         |
* Grid_y0            | y origin of output grid                         |
* Grid_x1            | x at outermost corner of output grid            |
* Grid_y1            | y at outermost corner of output grid            |
* Grid_stride        | every ith point to be outputted                 |
* Grid_etikext_s     | tag extension for specific grid		       |
*----------------------------------------------------------------------
* 
*
#endif

      integer MAXGRID1
      parameter(MAXGRID1=4)
      integer Grid_x0(MAXGRID1),Grid_x1(MAXGRID1)
      integer Grid_y0(MAXGRID1),Grid_y1(MAXGRID1)
      integer Grid_id(MAXGRID1), Grid_stride(MAXGRID1)
      integer Grid_ig1(MAXGRID1), Grid_ig2(MAXGRID1)
      integer Grid_ig3(MAXGRID1), Grid_ig4(MAXGRID1)
      character*4 Grid_gxtyp_s
      character*12 Grid_etikext_s(MAXGRID1)
      integer Grid_ip2,
     $        Grid_xmin,Grid_xmax,Grid_ymin,Grid_ymax,Grid_reduc,
     $        Grid_ixg(4), Grid_sets,Grid_niout,Grid_njout
      real    Grid_long(*), Grid_latg(*)
      pointer (Grid_long_, Grid_long), (Grid_latg_,Grid_latg)

      MARK_COMMON_BEG (Grid_i)
      COMMON /Grid_i/ 
     $        Grid_ig1,Grid_ig2,Grid_ig3,Grid_ig4,Grid_ip2,
     $        Grid_xmin,Grid_xmax,Grid_ymin,Grid_ymax,Grid_reduc,
     $        Grid_ixg,Grid_sets,Grid_niout,Grid_njout,
     $        Grid_x0,Grid_x1,Grid_y0,Grid_y1,
     $        Grid_id,Grid_stride
      MARK_COMMON_END (Grid_i)

      MARK_COMMON_BEG (Grid_c)
      COMMON /Grid_c/ Grid_gxtyp_s,Grid_etikext_s
      MARK_COMMON_END (Grid_c)

      MARK_COMMON_BEG (Grid_p)
      COMMON /Grid_p/ Grid_long_,Grid_latg_
      MARK_COMMON_END (Grid_p)