doc clarifications, example fixes, grammar.
diff --git a/user_guide/libraries/trackback.html b/user_guide/libraries/trackback.html
index ecc9c21..513cbf2 100644
--- a/user_guide/libraries/trackback.html
+++ b/user_guide/libraries/trackback.html
@@ -200,7 +200,7 @@
<code>http://www.your-site.com/index.php/trackback/receive/<samp>entry_id</samp></code>
-<p>Notice the entry_id is in the third URI, which you can retrieve using:</p>
+<p>Notice the entry_id is in the third URI segment, which you can retrieve using:</p>
<code>$this->uri->segment(3);</code>