A field fields were incorrectly commented, and or examples invalid.
diff --git a/user_guide/database/forge.html b/user_guide/database/forge.html
index 655ab96..ecb1457 100644
--- a/user_guide/database/forge.html
+++ b/user_guide/database/forge.html
@@ -2,7 +2,7 @@
 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

 <head>

 

-<title>CodeIgniter User Guide : Database Utility Class</title>

+<title>CodeIgniter User Guide : Database Forge Class</title>

 

 <style type='text/css' media='all'>@import url('../userguide.css');</style>

 <link rel='stylesheet' type='text/css' media='all' href='../userguide.css' />

@@ -124,10 +124,10 @@
 // will translate to &quot;users VARCHAR(100)&quot; when the field is added.</code></p>

 <p>Additionally, the following key/values can be used:</p>

 <ul>

-    <li>unsigned/true : to generate &quot;UNSIGNED&quot; in the field definition</li>

-    <li>default/value : to generate a default value in the field definition</li>

-    <li>null/true : to generate &quot;NULL&quot; in the field definition. Without this, the field will default to &quot;NOT NULL&quot;</li>

-    <li>auto_increment/true : generates an auto_increment flag on the field. Note that the field type must integer</li>

+    <li>unsigned/true : to generate &quot;UNSIGNED&quot; in the field definition.</li>

+    <li>default/value : to generate a default value in the field definition.</li>

+    <li>null/true : to generate &quot;NULL&quot; in the field definition. Without this, the field will default to &quot;NOT NULL&quot;.</li>

+    <li>auto_increment/true : generates an auto_increment flag on the field. Note that the field type must be a type that supports this, such as integer.</li>

     </ul>

 <p><code>$fields = array(<br />

     &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'blog_id' =&gt; array(<br />

@@ -204,9 +204,9 @@
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'type' =&gt; 'TEXT',<br />

 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;),<br />

 );<br />

-$this-&gt;dbforge-&gt;modify_column('sites', $fields);<br />

+$this-&gt;dbforge-&gt;modify_column('table_name', $fields);<br />

     <br />

-    // gives ALTER TABLE sites CHANGE   	old_name new_name TEXT </code></p>

+    // gives ALTER TABLE table_name CHANGE   	old_name new_name TEXT </code></p>

 <p>&nbsp;</p>

 </div>

 <!-- END CONTENT -->