Calling from Fortran:

call BndCopyVN(ierr, cctkGH, stencil_size, variable_name_to,  
               variable_name_from)
call BndCopyVN(ierr, cctkGH, stencil_size, group_name_to,     
               group_name_from)
call BndCopyVN(ierr, cctkGH, stencil_size, variable_index_to, 
               variable_index_from)
call BndCopyVN(ierr, cctkGH, stencil_size, group_index_to,    
               group_index_from)

where

integer ierr 		 return value, operation failed when returnvalue negative

CCTK_POINTER cctkGH 		 grid hierarchy pointer

integer stencil_size(dim) 		 array of size dim (dimension of the grid function).  To how many points 


from the outer boundary to apply the boundary condition. 


character*(*) variable_name_to 		 the name of the grid function  to which the boundary condition


will be applied by copying to.

character*(*) variable_name_from 		 the name of the grid function     containing the values to copy from.


character*(*) group_name_to 		 the name of the group to which the boundary condition


will be applied by copying to.

character*(*) group_name_from 		 the name of the group    containing the the values to copy from.


integer variable_index_to 		 the index of the grid function  to which the boundary condition


will be applied by copying to.

integer variable_index_from 		 the index of the grid function     containing the the values to copy from.


integer group_index_to 		 the index of the group to which the boundary condition


will be applied by copying to.

integer group_index_from 		 the index of the group    containing the the values to copy from.