symmetry recognizing algorithm

From: SZIEBERTH Denes <dino at.at eik.bme.hu>
Subject: symmetry recognizing algorithm
Date: Mon, 27 Oct 1997 10:55:12 +0100 (MET)

        Dear netters,
  Could someone explain how the symmetry recognizing algorithm of gaussian
 or any other qc software works? Which is the fastest and simplest way
 to make a software recognize symmetry elements (axes, planes, improper axes,
 etc)
            Denes Szieberth
         e-mail : dino at.at goliat.eik.bme.hu