Added where_in(), where_in_or(), where_not_in(), and where_not_in_or() to Active Record.
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 8853969..55edb75 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -68,7 +68,7 @@
     <li>Javascript Calendar plugin now uses the months and days from the calendar language file, instead of hard-coded values, internationalizing it.</li>

     <li>Removed &quot;rand()&quot; as a listed option from orderby in the <a href="./database/active_record.html">Active Record</a>, as it was MySQL only.</li>

     <li>Added 'random' as an <kbd>order_by()</kbd> option in <a href="./database/active_record.html">Active Record</a>.</li>

-    <li>Added <kbd>where_in()</kbd> to <a href="./database/active_record.html">Active Record</a>.</li>

+    <li>Added <kbd>where_in()</kbd>, <kbd>where_in_or()</kbd>, <kbd>where_not_in()</kbd>, and <kbd>where_not_in_or()</kbd> to <a href="./database/active_record.html">Active Record</a>.</li>

     <li>Added titles to all user manual pages.</li>

     <li>Added a check for NULL fields in the MySQL database backup utility.</li>

     <li>Documented the <kbd>timezones()</kbd> function in the <a href="./helpers/date_helper.html">Date Helper</a>.</li>

diff --git a/user_guide/database/active_record.html b/user_guide/database/active_record.html
index 0146941..cf8ad46 100644
--- a/user_guide/database/active_record.html
+++ b/user_guide/database/active_record.html
@@ -268,26 +268,33 @@
 

 

 <h2>$this->db->where_in();</h2>

-<p>This function is used to write WHERE clauses that contain the IN keyword.</p>

-

+<p>Generates a WHERE field IN ('item', 'item') SQL query joined with  AND if appropriate</p>

 <p><code>

-    $names = array('frank', 'Todd', 'James');<br />

+    $names = array('Frank', 'Todd', 'James');<br />

     $this->db->where_in('username', $names);<br />

-    // Produces: AND WHERE username IN ('frank', 'Todd', 'James')</code></p>

-<p>An optional third parameter can be used to specify if the WHERE statement should be separated with &quot;OR&quot; or &quot;AND&quot; in the event of multiple WHERE calls. The default is &quot;AND&quot;. They are called with 'and', 'or'.</p>

-<p><code>$names = array('frank', 'Todd', 'James');<br />

-        <br />

-        $this-&gt;db-&gt;where('usergroup',  '5')<br />

-$this-&gt;db-&gt;where_in('username', $names);<br />

-// Produces: WHERE usergroup = '5' AND WHERE username IN ('frank', 'Todd', 'James')<br />

-<br />

-$this-&gt;db-&gt;where('usergroup',  '5')<br />

-$this-&gt;db-&gt;where_in('username', $names, 'and');<br />

-// Produces: WHERE usergroup = '5' AND WHERE username IN ('frank', 'Todd', 'James')<br />

-<br />

-$this-&gt;db-&gt;where('usergroup',  '5')<br />

-$this-&gt;db-&gt;where_in('username', $names, 'or');<br />

-// Produces: WHERE usergroup = '5' OR WHERE username IN ('frank', 'Todd', 'James')</code></p>

+    // Produces: AND WHERE username IN ('Frank', 'Todd', 'James')</code></p>

+

+<h2>$this->db->where_in_or();</h2>

+<p>Generates a WHERE field IN ('item', 'item') SQL query joined with OR if appropriate</p>

+<p><code>

+    $names = array('Frank', 'Todd', 'James');<br />

+    $this->db->where_in_or('username', $names);<br />

+    // Produces: OR WHERE username IN ('Frank', 'Todd', 'James')</code></p>

+    

+<h2>$this->db->where_not_in();</h2>

+<p>Generates a WHERE field NOT IN ('item', 'item') SQL query joined with AND if appropriate</p>

+<p><code>

+    $names = array('Frank', 'Todd', 'James');<br />

+    $this->db->where_not_in('username', $names);<br />

+    // Produces: AND WHERE username NOT IN ('Frank', 'Todd', 'James')</code></p>

+

+<h2>$this->db->where_not_in_or();</h2>

+<p>Generates a WHERE field NOT IN ('item', 'item') SQL query joined with OR if appropriate</p>

+<p><code>

+    $names = array('Frank', 'Todd', 'James');<br />

+    $this->db->where_in('username', $names);<br />

+    // Produces: OR WHERE username NOT IN ('Frank', 'Todd', 'James')</code></p>

+

 <h2>$this->db->like();</h2>

 <p>This function enables you to generate <strong>LIKE</strong> clauses, useful for doing searches.</p>