o fit the charge density (CD) and/or 
fit the exchange-correlation (XC) potential.

<P>
DFT input is provided using the compound <code>DFT</code> directive
<PRE>
  DFT
    ...
  END
</PRE>
The actual DFT calculation will be performed when the input module
encounters the <code>TASK</code> directive (Section <A HREF="node7.html#sec:task">5.10</A>).  
<PRE>
  TASK DFT
</PRE>

<P>
Once a user has specified a geometry and a Kohn-Sham orbital basis set
the DFT module can be invoked with no input directives (defau