diff --git a/system/libraries/Pagination.php b/system/libraries/Pagination.php
index 4cb72bb..ae8dba0 100644
--- a/system/libraries/Pagination.php
+++ b/system/libraries/Pagination.php
@@ -37,46 +37,269 @@
  */
 class CI_Pagination {
 
-	protected $base_url				= ''; // The page we are linking to
-	protected $prefix				= ''; // A custom prefix added to the path.
-	protected $suffix				= ''; // A custom suffix added to the path.
-	protected $total_rows			= 0; // Total number of items (database results)
-	protected $per_page				= 10; // Max number of items you want shown per page
-	protected $num_links			= 2; // Number of "digit" links to show before/after the currently viewed page
-	protected $cur_page				= 0; // The current page being viewed
-	protected $use_page_numbers		= FALSE; // Use page number for segment instead of offset
-	protected $first_link			= '&lsaquo; First';
-	protected $next_link			= '&gt;';
-	protected $prev_link			= '&lt;';
-	protected $last_link			= 'Last &rsaquo;';
-	protected $uri_segment			= 3;
-	protected $full_tag_open		= '';
-	protected $full_tag_close		= '';
-	protected $first_tag_open		= '';
-	protected $first_tag_close		= '';
-	protected $last_tag_open		= '';
-	protected $last_tag_close		= '';
-	protected $first_url			= ''; // Alternative URL for the First Page.
-	protected $cur_tag_open			= '<strong>';
-	protected $cur_tag_close		= '</strong>';
-	protected $next_tag_open		= '';
-	protected $next_tag_close		= '';
-	protected $prev_tag_open		= '';
-	protected $prev_tag_close		= '';
-	protected $num_tag_open			= '';
-	protected $num_tag_close		= '';
+	/**
+	 * Base URL
+	 *
+	 * The page that we're linking to
+	 *
+	 * @var	string
+	 */
+	protected $base_url		= '';
+
+	/**
+	 * Prefix
+	 *
+	 * @var	string
+	 */
+	protected $prefix		= '';
+
+	/**
+	 * Suffix
+	 *
+	 * @var	string
+	 */
+	protected $suffix		= '';
+
+	/**
+	 * Total number of items
+	 *
+	 * @var	int
+	 */
+	protected $total_rows		= 0;
+
+	/**
+	 * Items per page
+	 *
+	 * @var	int
+	 */
+	protected $per_page		= 10;
+
+	/**
+	 * Number of links to show
+	 *
+	 * Relates to "digit" type links shown before/after
+	 * the currently viewed page.
+	 *
+	 * @var	int
+	 */
+	protected $num_links		= 2;
+
+	/**
+	 * Current page
+	 *
+	 * @var	int
+	 */
+	protected $cur_page		= 0;
+
+	/**
+	 * Use page numbers flag
+	 *
+	 * Whether to use actual page numbers instead of an offset
+	 *
+	 * @var	bool
+	 */
+	protected $use_page_numbers	= FALSE;
+
+	/**
+	 * First link
+	 *
+	 * @var	string
+	 */
+	protected $first_link		= '&lsaquo; First';
+
+	/**
+	 * Next link
+	 *
+	 * @var	string
+	 */
+	protected $next_link		= '&gt;';
+
+	/**
+	 * Previous link
+	 *
+	 * @var	string
+	 */
+	protected $prev_link		= '&lt;';
+
+	/**
+	 * Last link
+	 *
+	 * @var	string
+	 */
+	protected $last_link		= 'Last &rsaquo;';
+
+	/**
+	 * URI Segment
+	 *
+	 * @var	int
+	 */
+	protected $uri_segment		= 3;
+
+	/**
+	 * Full tag open
+	 *
+	 * @var	string
+	 */
+	protected $full_tag_open	= '';
+
+	/**
+	 * Full tag close
+	 *
+	 * @var	string
+	 */
+	protected $full_tag_close	= '';
+
+	/**
+	 * First tag open
+	 *
+	 * @var	string
+	 */
+	protected $first_tag_open	= '';
+
+	/**
+	 * First tag close
+	 *
+	 * @var	string
+	 */
+	protected $first_tag_close	= '';
+
+	/**
+	 * Last tag open
+	 *
+	 * @var	string
+	 */
+	protected $last_tag_open	= '';
+
+	/**
+	 * Last tag close
+	 *
+	 * @var	string
+	 */
+	protected $last_tag_close	= '';
+
+	/**
+	 * First URL
+	 *
+	 * An alternative URL for the first page
+	 *
+	 * @var	string
+	 */
+	protected $first_url		= '';
+
+	/**
+	 * Current tag open
+	 *
+	 * @var	string
+	 */
+	protected $cur_tag_open		= '<strong>';
+
+	/**
+	 * Current tag close
+	 *
+	 * @var	string
+	 */
+	protected $cur_tag_close	= '</strong>';
+
+	/**
+	 * Next tag open
+	 *
+	 * @var	string
+	 */
+	protected $next_tag_open	= '';
+
+	/**
+	 * Next tag close
+	 *
+	 * @var	string
+	 */
+	protected $next_tag_close	= '';
+
+	/**
+	 * Previous tag open
+	 *
+	 * @var	string
+	 */
+	protected $prev_tag_open	= '';
+
+	/**
+	 * Previous tag close
+	 *
+	 * @var	string
+	 */
+	protected $prev_tag_close	= '';
+
+	/**
+	 * Number tag open
+	 *
+	 * @var	string
+	 */
+	protected $num_tag_open		= '';
+
+	/**
+	 * Number tag close
+	 *
+	 * @var	string
+	 */
+	protected $num_tag_close	= '';
+
+	/**
+	 * Page query string flag
+	 *
+	 * @var	bool
+	 */
 	protected $page_query_string	= FALSE;
+
+	/**
+	 * Query string segment
+	 *
+	 * @var	string
+	 */
 	protected $query_string_segment = 'per_page';
-	protected $display_pages		= TRUE;
-	protected $_attributes			= '';
-	protected $_link_types			= array();
+
+	/**
+	 * Display pages flag
+	 *
+	 * @var	bool
+	 */
+	protected $display_pages	= TRUE;
+
+	/**
+	 * Attributes
+	 *
+	 * @var	string
+	 */
+	protected $_attributes		= '';
+
+	/**
+	 * Link types
+	 *
+	 * "rel" attribute
+	 *
+	 * @see	CI_Pagination::_attr_rel()
+	 * @var	array
+	 */
+	protected $_link_types		= array();
+
+	/**
+	 * Reuse query string flag
+	 *
+	 * @var	bool
+	 */
 	protected $reuse_query_string   = FALSE;
-	protected $data_page_attr		= 'data-ci-pagination-page';
+
+	/**
+	 * Data page attribute
+	 *
+	 * @var	string
+	 */
+	protected $data_page_attr	= 'data-ci-pagination-page';
+
+	// --------------------------------------------------------------------
 
 	/**
 	 * Constructor
 	 *
-	 * @param	array	initialization parameters
+	 * @param	array	$params	Initialization parameters
 	 * @return	void
 	 */
 	public function __construct($params = array())
@@ -90,7 +313,7 @@
 	/**
 	 * Initialize Preferences
 	 *
-	 * @param	array	initialization parameters
+	 * @param	array	$params	Initialization parameters
 	 * @return	void
 	 */
 	public function initialize($params = array())
@@ -353,7 +576,7 @@
 	/**
 	 * Parse attributes
 	 *
-	 * @param	array
+	 * @param	array	$attributes
 	 * @return	void
 	 */
 	protected function _parse_attributes($attributes)
@@ -377,7 +600,7 @@
 	 * Add "rel" attribute
 	 *
 	 * @link	http://www.w3.org/TR/html5/links.html#linkTypes
-	 * @param	string
+	 * @param	string	$type
 	 * @return	string
 	 */
 	protected function _attr_rel($type)
diff --git a/system/libraries/Session/Session.php b/system/libraries/Session/Session.php
index fb5b9fd..bb13c33 100755
--- a/system/libraries/Session/Session.php
+++ b/system/libraries/Session/Session.php
@@ -52,10 +52,29 @@
  */
 class CI_Session extends CI_Driver_Library {
 
+	/**
+	 * Initialization parameters
+	 *
+	 * @var	array
+	 */
 	public $params = array();
+
+	/**
+	 * Current driver in use
+	 *
+	 * @var	string
+	 */
 	protected $current = NULL;
+
+	/**
+	 * User data
+	 *
+	 * @var	array
+	 */
 	protected $userdata = array();
 
+	// ------------------------------------------------------------------------
+
 	const FLASHDATA_KEY = 'flash';
 	const FLASHDATA_NEW = ':new:';
 	const FLASHDATA_OLD = ':old:';
@@ -63,6 +82,8 @@
 	const EXPIRATION_KEY = '__expirations';
 	const TEMP_EXP_DEF = 300;
 
+	// ------------------------------------------------------------------------
+
 	/**
 	 * CI_Session constructor
 	 *
@@ -596,8 +617,16 @@
  */
 abstract class CI_Session_driver extends CI_Driver {
 
+	/**
+	 * CI Singleton
+	 *
+	 * @see	get_instance()
+	 * @var	object
+	 */
 	protected $CI;
 
+	// ------------------------------------------------------------------------
+
 	/**
 	 * Constructor
 	 *
diff --git a/system/libraries/Trackback.php b/system/libraries/Trackback.php
index ac74f36..c923a62 100644
--- a/system/libraries/Trackback.php
+++ b/system/libraries/Trackback.php
@@ -39,12 +39,45 @@
  */
 class CI_Trackback {
 
-	public $time_format	= 'local';
+	/**
+	 * Character set
+	 *
+	 * @var	string
+	 */
 	public $charset		= 'UTF-8';
-	public $data			= array('url' => '', 'title' => '', 'excerpt' => '', 'blog_name' => '', 'charset' => '');
+
+	/**
+	 * Trackback data
+	 *
+	 * @var	array
+	 */
+	public $data		= array('url' => '', 'title' => '', 'excerpt' => '', 'blog_name' => '', 'charset' => '');
+
+	/**
+	 * Convert ASCII flag
+	 *
+	 * Whether to convert high-ASCII and MS Word
+	 * characters to HTML entities.
+	 *
+	 * @var	bool
+	 */
 	public $convert_ascii	= TRUE;
-	public $response		= '';
-	public $error_msg		= array();
+
+	/**
+	 * Response
+	 *
+	 * @var	string
+	 */
+	public $response	= '';
+
+	/**
+	 * Error messages list
+	 *
+	 * @var	string[]
+	 */
+	public $error_msg	= array();
+
+	// --------------------------------------------------------------------
 
 	/**
 	 * Constructor
diff --git a/system/libraries/javascript/Jquery.php b/system/libraries/javascript/Jquery.php
index 13f6c80..2bf4795 100644
--- a/system/libraries/javascript/Jquery.php
+++ b/system/libraries/javascript/Jquery.php
@@ -37,14 +37,57 @@
  */
 class CI_Jquery extends CI_Javascript {
 
+	/**
+	 * JavaScript directory location
+	 *
+	 * @var	string
+	 */
 	protected $_javascript_folder = 'js';
+
+	/**
+	 * JQuery code for load
+	 *
+	 * @var	array
+	 */
 	public $jquery_code_for_load = array();
+
+	/**
+	 * JQuery code for compile
+	 *
+	 * @var	array
+	 */
 	public $jquery_code_for_compile = array();
+
+	/**
+	 * JQuery corner active flag
+	 *
+	 * @var	bool
+	 */
 	public $jquery_corner_active = FALSE;
+
+	/**
+	 * JQuery table sorter active flag
+	 *
+	 * @var	bool
+	 */
 	public $jquery_table_sorter_active = FALSE;
+
+	/**
+	 * JQuery table sorder pager active
+	 *
+	 * @var	bool
+	 */
 	public $jquery_table_sorter_pager_active = FALSE;
+
+	/**
+	 * JQuery AJAX image
+	 *
+	 * @var	string
+	 */
 	public $jquery_ajax_img = '';
 
+	// --------------------------------------------------------------------
+
 	/**
 	 * Constructor
 	 *
@@ -383,8 +426,8 @@
 	 *
 	 * Outputs a jQuery addClass event
 	 *
-	 * @param	string	$element = 'this'
-	 * @param	string	$class = ''
+	 * @param	string	$element
+	 * @param	string	$class
 	 * @return	string
 	 */
 	protected function _addClass($element = 'this', $class = '')
@@ -400,10 +443,10 @@
 	 *
 	 * Outputs a jQuery animate event
 	 *
-	 * @param	string	$element = 'this'
-	 * @param	array	$params = array()
-	 * @param	string	$speed = ''		'slow', 'normal', 'fast', or time in milliseconds
-	 * @param	string	$extra = ''
+	 * @param	string	$element
+	 * @param	array	$params
+	 * @param	string	$speed	'slow', 'normal', 'fast', or time in milliseconds
+	 * @param	string	$extra
 	 * @return	string
 	 */
 	protected function _animate($element = 'this', $params = array(), $speed = '', $extra = '')
@@ -515,8 +558,8 @@
 	 *
 	 * Outputs a jQuery remove class event
 	 *
-	 * @param	string	$element = 'this'
-	 * @param	string	$class = ''
+	 * @param	string	$element
+	 * @param	string	$class
 	 * @return	string
 	 */
 	protected function _removeClass($element = 'this', $class = '')
@@ -623,8 +666,8 @@
 	 *
 	 * Outputs a jQuery toggle class event
 	 *
-	 * @param	string	$element = 'this'
-	 * @param	string	$class = ''
+	 * @param	string	$element
+	 * @param	string	$class
 	 * @return	string
 	 */
 	protected function _toggleClass($element = 'this', $class = '')
@@ -708,9 +751,9 @@
 	/**
 	 * Zebra tables
 	 *
-	 * @param	string	$class = ''
-	 * @param	string	$odd = 'odd'
-	 * @param	string	$hover = ''
+	 * @param	string	$class
+	 * @param	string	$odd
+	 * @param	string	$hover
 	 * @return	string
 	 */
 	protected function _zebraTables($class = '', $odd = 'odd', $hover = '')
@@ -735,10 +778,9 @@
 	/**
 	 * Corner Plugin
 	 *
-	 * http://www.malsup.com/jquery/corner/
-	 *
-	 * @param	string	$element = ''
-	 * @param	string	$corner_style = ''
+	 * @link	http://www.malsup.com/jquery/corner/
+	 * @param	string	$element
+	 * @param	string	$corner_style
 	 * @return	string
 	 */
 	public function corner($element = '', $corner_style = '')
@@ -762,7 +804,7 @@
 	 * Load a thickbox modal window
 	 *
 	 * @param	string	$src
-	 * @param	bool	$relative = FALSE
+	 * @param	bool	$relative
 	 * @return	void
 	 */
 	public function modal($src, $relative = FALSE)
@@ -778,7 +820,7 @@
 	 * Load an Effect library
 	 *
 	 * @param	string	$src
-	 * @param	bool	$relative = FALSE
+	 * @param	bool	$relative
 	 * @return	void
 	 */
 	public function effect($src, $relative = FALSE)
@@ -794,7 +836,7 @@
 	 * Load a plugin library
 	 *
 	 * @param	string	$src
-	 * @param	bool	$relative = FALSE
+	 * @param	bool	$relative
 	 * @return	void
 	 */
 	public function plugin($src, $relative = FALSE)
@@ -810,7 +852,7 @@
 	 * Load a user interface library
 	 *
 	 * @param	string	$src
-	 * @param	bool	$relative = FALSE
+	 * @param	bool	$relative
 	 * @return	void
 	 */
 	public function ui($src, $relative = FALSE)
@@ -826,7 +868,7 @@
 	 * Creates a jQuery sortable
 	 *
 	 * @param	string	$element
-	 * @param	array	$options = array()
+	 * @param	array	$options
 	 * @return	string
 	 */
 	public function sortable($element, $options = array())
@@ -897,8 +939,8 @@
 	 * As events are specified, they are stored in an array
 	 * This funciton compiles them all for output on a page
 	 *
-	 * @param	string	$view_var = 'script_foot'
-	 * @param	bool	$script_tags = TRUE
+	 * @param	string	$view_var
+	 * @param	bool	$script_tags
 	 * @return	void
 	 */
 	protected function _compile($view_var = 'script_foot', $script_tags = TRUE)
@@ -964,8 +1006,8 @@
 	 *
 	 * Outputs the script tag that loads the jquery.js file into an HTML document
 	 *
-	 * @param	string	$library_src = ''
-	 * @param	bool	$relative = FALSE
+	 * @param	string	$library_src
+	 * @param	bool	$relative
 	 * @return	string
 	 */
 	public function script($library_src = '', $relative = FALSE)