Usage</A>
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<H2><A NAME="SECTION00056000000000000000">
4.6 Other tools</A>
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<P>
Code <TT>epsilon.x</TT> calculates RPA frequency-dependent complex dielectric 
function. Documentation is in file <TT>Doc/eps_man.tex</TT>.

<P>
Code <TT>initial_state.x</TT> calculates the initial state contribution
to