sed, and Fock matrices used in the DIIS
extrapolation can be modified by the following keywords
<PRE>
  CONVERGENCE  [damp &lt;integer ndamp default 0&gt;] \
               [diis [nfock &lt;integer nfock default 10&gt;]] \
               [lshift &lt;real lshift default 0.5&gt;] \
               [hl_tol &lt;real hl_tol default 0.1&gt;]]
</PRE>

<P>
Damping is defined to be the percentage of the previous iterations
density mixed with the current iterations density.  So, for example 
<PRE>
  CONVERGENCE damp 7