30   MatStencil     lower, upper;                  /* Stencils to select slice */  in main()  local
96     upper.i = sliceid;  in main()
97     upper.j = my;  in main()
98     upper.k = mz;  in main()
99     upper.c = 1;  in main()
105     upper.i = mx;  in main()
106     upper.j = sliceid;  in main()
107     upper.k = mz;  in main()
108     upper.c = 1;  in main()
114     upper.i = mx;  in main()
115     upper.j = my;  in main()
116     upper.k = sliceid;  in main()
117     upper.c = 1;  in main()
119   PetscCall(DMDACreatePatchIS(da, &lower, &upper, &selectis, patchis_offproc));  in main()