[ci skip] Update the Language library docs
diff --git a/user_guide_src/source/libraries/language.rst b/user_guide_src/source/libraries/language.rst
index e772e8e..3cee5d7 100644
--- a/user_guide_src/source/libraries/language.rst
+++ b/user_guide_src/source/libraries/language.rst
@@ -19,11 +19,18 @@
.. note:: Each language should be stored in its own folder. For example,
the English files are located at: system/language/english
+.. contents::
+ :local:
+
+.. raw:: html
+
+ <div class="custom-index container"></div>
+
Creating Language Files
=======================
-Language files must be named with **_lang.php** as the file extension. For
-example, let's say you want to create a file containing error messages.
+Language files must be named with **_lang.php** as the filename extension.
+For example, let's say you want to create a file containing error messages.
You might name it: error_lang.php
Within the file you will assign each line of text to an array called
@@ -89,4 +96,30 @@
application, you can tell CodeIgniter to :doc:`auto-load
<../general/autoloader>` it during system initialization. This is done
by opening the **application/config/autoload.php** file and adding the
-language(s) to the autoload array.
\ No newline at end of file
+language(s) to the autoload array.
+
+***************
+Class Reference
+***************
+
+.. class:: CI_Lang
+
+ .. method:: load($langfile[, $idiom = ''[, $return = FALSE[, $add_suffix = TRUE[, $alt_path = '']]]])
+
+ :param string $langfile: Language file to load
+ :param string $idiom: Language name (i.e. 'english')
+ :param bool $return: Whether to return the loaded array of translations
+ :param bool $add_suffix: Whether to add the '_lang' suffix to the language file name
+ :param string $alt_path: An alternative path to look in for the language file
+ :returns: void or array if the third parameter is set to TRUE
+
+ Loads a language file.
+
+ .. method:: line($line[, $log_errors = TRUE])
+
+ :param string $line: Language line key name
+ :param bool $log_errors: Whether to log an error if the line isn't found
+ :returns: string or FALSE on failure
+
+ Fetches a single translation line from the already loaded language files,
+ based on the line's name.
\ No newline at end of file