vdata_id

IN:

Vdata identifier returned by VSattach

	Purpose	Returns the tag of the specified vdata.
	Return value	Returns the tag of the vdata if successful and FAIL (or -1) otherwise.
	Description	Returns the tag of the vdata identified by the parameter vdata_id.

	FORTRAN	integer function vsqtag(vdata_id)
		integer vdata_id