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+  
+  <p>
+  	Poles and zeros are treated the same with regards creation, so we will look here at poles only. The
+  	meaning of a pole and a zero only becomes important when creating a pole/zero model.
+  </p>
+  <p>
+	Poles are specified by in the LTPDA Toolbox by a frequency, <i>f</i>, and (optionally) a quality 
+	factor, <i>Q</i>, or by a complex number.
+  </p>
+  <p>
+	The following code fragment creates a real pole at 1Hz:
+  </p>
+  <div class="fragment"><pre>
+  	>> pz(1)
+------ pz/1 -------
+      f: 1
+      q: NaN
+     ri: -6.28318530717959
+version: $Id: pzmodel_pz_content.html,v 1.3 2009/02/18 12:15:16 hewitson Exp $
+-------------------
+  </pre></div>
+  <p>
+    To create a complex pole, you can specify a quality factor. For example,
+  </p>
+  <div class="fragment"><pre>
+   >> pz(1,4)
+------ pz/1 -------
+      f: 1
+      q: 4
+     ri: [0.785398163397448+i*6.23390466154956;0.785398163397448-i*6.23390466154956]
+version: $Id: pzmodel_pz_content.html,v 1.3 2009/02/18 12:15:16 hewitson Exp $
+-------------------
+  </pre></div>
+  <p>
+    This creates a complex pole at 1Hz with a <i>Q</i> of 4. You can also see that the complex representation
+    is also shown, but only one part of the conjugate pair.
+  </p>
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