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+
+  <p>
+	Parameter objects are used in the LTPDA Toolbox to configure the behaviour of algorithms. A
+	parameter (<tt>param</tt>) object has two main properties:
+	<ul>
+		<li><tt>'key'</tt> &mdash; The parameter name</li>
+ 		<li><tt>'val'</tt> &mdash; The parameter value</li>
+	</ul>
+	See <a href="class_desc_param.html">param class</a> for further details. The 'key' property is always stored in upper case. The 'value' of a parameter can be any LTPDA object, as well as most standard MATLAB types.
+  </p>
+  <p>	
+	Parameter values can take any form: vectors or matrices of numbers; strings; other objects, 
+	for example a <tt>specwin</tt> (spectral window) object.
+  </p>
+  <p>
+	Parameters are created using the <tt>param</tt> class constructor. The following code shows 
+	how to create a parameter 'a' with a value of 1
+  </p>
+  <div class="fragment"><pre>
+	>> p = param(<span class="string">'a'</span>, 1)
+	---- param 1 ----
+	key: a
+	val: 1
+	-----------------
+  </pre></div>
+  <p>
+	The contents of a parmeter object can be accessed as follows:
+  </p>
+  <div class="fragment"><pre>
+	>> key = p.key;  <span class="comment">% get the parameter key</span>
+	>> val = p.val;  <span class="comment">% get the parameter value</span>
+  </pre></div>
+