  We show that an unambiguous way of determining the universal limiting
fragmentation region is to consider the derivative ($d^2n/d\eta^2$) of the
pseudo-rapidity distribution per participant pair.
  In addition, we find that the transition region between the fragmentation and
the central plateau regions exhibits a second kind of universal behavior that
is only apparent in $d^2n/d\eta^2$.
  The $\sqrts$ dependence of the height of the central plateau
$(dn/d\eta)_{\eta=0}$ and the total charged particle multiplicity $n_{\rm
total}$ critically depend on the behavior of this universal transition curve.
  Analyzing available RHIC data, we show that $(dn/d\eta)_{\eta=0}$ can be
bounded by $\ln^2 s$ and $n_{\rm total}$ can be bounded by $\ln^3 s$.
  We also show that the deuteron-gold data from RHIC has the exactly same
features as the gold-gold data indicating that these universal behaviors are a
feature of the initial state parton-nucleus interactions and not a consequence
of final state interactions.
  Predictions for LHC energy are also given.
