This directory contains the internal classes used for PROOF processing.
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 See:
<ul>
<li><a href="http://root.cern.ch/twiki/bin/view/ROOT/PROOF">The PROOF system
    </a></li>
<li><a href="ftp://root.cern.ch/root/doc/21ExampleAnalysis.pdf">The Chapter about Selectors in the Users Guide
    </a></li>
</ul>
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