gr_id

IN:

GR interface identifier returned by GRstart

	Purpose	Terminates the GR interface session.
	Return value	Returns SUCCEED (or 0) if successful and FAIL (or -1) otherwise.
	Description	GRend terminates the GR interface session identified by the parameter gr_id.
		GRend, together with GRstart, defines the extent of a GR interface session. GRend disposes of the internal structures initialized by the corresponding call to GRstart. There must be a call to GRend for each call to GRstart; failing to provide one may cause loss of data.
		GRstart and GRend do not manage file access; use Hopen and Hclose to open and close HDF files. Hopen must be called before GRstart and Hclose must be called after GRend.

	FORTRAN	integer function mgend(gr_id)
		integer gr_id