  (Abridged Abstract) This paper deals with a number of technical achievements
that are instrumental for a dis-solution of the so-called {\it Hole Argument}
in general relativity. The work is carried through in metric gravity for the
class of Christoudoulou-Klainermann space-times, in which the temporal
evolution is ruled by the {\it weak} ADM energy. The main results of the
investigation are the following: 1) A re-interpretation of {\it active}
diffeomorphisms as {\it passive and metric-dependent} dynamical symmetries of
Einstein's equations, a re-interpretation that discloses their (up to now
unknown) connection to gauge transformations on-shell; understanding such
connection also enlightens the real content of the {\it Hole Argument}. 2) The
utilization of Bergmann-Komar {\it intrinsic coordinates} for a peculiar
gauge-fixing to the superhamiltonian and supermomentum constraints which
embodies on shell a {\it physical individuation} of the mathematical points of
$M^4$ as point-events in terms of the non-local intrinsic degrees of freedom of
the gravitational field (Dirac observables). 3) A clarification of the notion
of {\it Bergmann observable} that leads to a main conjecture asserting the
existence of i) special Dirac observables which are also Bergmann observables;
ii) tensorial (scalar) gauge variables.
