-<chapter id="introduction">
+<chapter id="producer_framework">
<title>The producer framework</title>
Please read the presentation of the <glossterm linkend="producers">producers</glossterm> concept
for an introduction.
<para>
<table border="1">
+ <title>Expressions</title>
+
<tr><td>a string literal</td> <td><code>'hello'</code></td></tr>
<tr><td>a numeric literal</td> <td><code>2138</code></td></tr>
</para>
<table border="1">
+ <title>Reference for producer node types and statements</title>
<tr><td>Name</td> <td bgcolor="#eea8a8"><code>Set</code></td></tr>
<tr><td>Purpose</td> <td>Alter a variable's using a free expression</td></tr>