vdata_id

IN:

Vdata identifier returned by VSattach

	Purpose	Returns the reference number of a vdata.
	Return value	Returns the reference number of the vdata if successful and FAIL (or -1) otherwise.
	Description	VSQueryref returns the reference number of the vdata identified by the parameter vdata_id.

	FORTRAN	integer function vsqref(vdata_id)
		integer vdata_id