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+################
+CodeIgniter URLs
+################
+
+By default, URLs in CodeIgniter are designed to be search-engine and
+human friendly. Rather than using the standard "query string" approach
+to URLs that is synonymous with dynamic systems, CodeIgniter uses a
+**segment-based** approach::
+
+	example.com/news/article/my_article
+
+.. note:: Query string URLs can be optionally enabled, as described
+	below.
+
+URI Segments
+============
+
+The segments in the URL, in following with the Model-View-Controller
+approach, usually represent::
+
+	example.com/class/function/ID
+
+
+#. The first segment represents the controller **class** that should be
+   invoked.
+#. The second segment represents the class **function**, or method, that
+   should be called.
+#. The third, and any additional segments, represent the ID and any
+   variables that will be passed to the controller.
+
+The :doc::doc:`URI Class <../libraries/uri>` and the `URL
+Helper <../helpers/url_helper>` contain functions that make it
+easy to work with your URI data. In addition, your URLs can be remapped
+using the :doc:`URI Routing <routing>` feature for more flexibility.
+
+Removing the index.php file
+===========================
+
+By default, the **index.php** file will be included in your URLs::
+
+	example.com/index.php/news/article/my_article
+
+You can easily remove this file by using a .htaccess file with some
+simple rules. Here is an example of such a file, using the "negative"
+method in which everything is redirected except the specified items::
+
+	RewriteEngine on RewriteCond $1 !^(index\.php|images|robots\.txt) RewriteRule ^(.*)$ /index.php/$1 [L]
+
+In the above example, any HTTP request other than those for index.php,
+images, and robots.txt is treated as a request for your index.php file.
+
+Adding a URL Suffix
+===================
+
+In your config/config.php file you can specify a suffix that will be
+added to all URLs generated by CodeIgniter. For example, if a URL is
+this::
+
+	example.com/index.php/products/view/shoes
+
+You can optionally add a suffix, like .html, making the page appear to
+be of a certain type::
+
+	example.com/index.php/products/view/shoes.html
+
+Enabling Query Strings
+======================
+
+In some cases you might prefer to use query strings URLs::
+
+	index.php?c=products&m=view&id=345
+
+CodeIgniter optionally supports this capability, which can be enabled in
+your application/config.php file. If you open your config file you'll
+see these items::
+
+	$config['enable_query_strings'] = FALSE; $config['controller_trigger'] = 'c'; $config['function_trigger'] = 'm';
+
+If you change "enable_query_strings" to TRUE this feature will become
+active. Your controllers and functions will then be accessible using the
+"trigger" words you've set to invoke your controllers and methods::
+
+	index.php?c=controller&m=method
+
+**Please note:** If you are using query strings you will have to build
+your own URLs, rather than utilizing the URL helpers (and other helpers
+that generate URLs, like some of the form helpers) as these are designed
+to work with segment based URLs.