TION SHOULD BE PAID NOT ONLY TO THE</span>
<span class="c">!              STRUCTURE OF THE PHASE PLOT</span>
<span class="c">!              (NEAR-ZERO SLOPE VERSUS NON-ZERO SLOPE)</span>
<span class="c">!              BUT ALSO TO THE RANGE</span>
<span class="c">!              OF VALUES ON THE VERTICAL AXIS.</span>
<span class="c">!              A PLOT WITH MUCH STRUCTURE BUT</span>
<span class="c">!              WITH A SMALL RANGE ON THE VERTICAL AXIS</span>
<span class="c">!              IS USUALLY MORE I