(the variable
<code>&lt;prefactor&gt;</code> in the input) for the local/nonlocal component or
total.  An example of this might be,
<PRE>
   XC becke88 nonlocal 0.72
</PRE>
The user should be aware that the Becke88 local component is simply
the Slater exchange and should be input as such.

<P>
Any combination of the supported exchange functional options can be
used.  For example the popular Gaussian B3 exchange could be specified
as:
<PRE>
   XC slater 0.8 becke88 nonlocal 0.72 HFexch 0.2
</PRE>

<P>

<P>

