[ci skip] Clarify get_cookie(), CI_Input::cookie() docs

Close #3527
Close #3528
diff --git a/user_guide_src/source/helpers/cookie_helper.rst b/user_guide_src/source/helpers/cookie_helper.rst
index 22fd0f7..4a3298f 100644
--- a/user_guide_src/source/helpers/cookie_helper.rst
+++ b/user_guide_src/source/helpers/cookie_helper.rst
@@ -37,12 +37,11 @@
 	:param	bool	$httponly: Whether to hide the cookie from JavaScript
 	:rtype:	void
 
-	This helper function gives you view file friendly syntax to set browser
-	cookies. Refer to the :doc:`Input Library <../libraries/input>` for a
-	description of its use, as this function is an alias for
+	This helper function gives you friendlier syntax to set browser
+	cookies. Refer to the :doc:`Input Library <../libraries/input>` for
+	a description of its use, as this function is an alias for
 	``CI_Input::set_cookie()``.
 
-
 .. function:: get_cookie($index[, $xss_clean = NULL]])
 
 	:param	string	$index: Cookie name
@@ -50,10 +49,12 @@
 	:returns:	The cookie value or NULL if not found
 	:rtype:	mixed
 
-	This helper function gives you view file friendly syntax to get browser
-	cookies. Refer to the :doc:`Input Library <../libraries/input>` for a
-	description of its use, as this function is an alias for ``CI_Input::cookie()``.
-
+	This helper function gives you friendlier syntax to get browser
+	cookies. Refer to the :doc:`Input Library <../libraries/input>` for
+	detailed description of its use, as this function acts very
+	similarly to ``CI_Input::cookie()``, except it will also prepend
+	the ``$config['cookie_prefix']`` that you might've set in your
+	*application/config/config.php* file.
 
 .. function:: delete_cookie($name[, $domain = ''[, $path = '/'[, $prefix = '']]]])
 
@@ -75,4 +76,4 @@
 	parameters.
 	::
 
-		delete_cookie($name, $domain, $path, $prefix)
\ No newline at end of file
+		delete_cookie($name, $domain, $path, $prefix);
diff --git a/user_guide_src/source/libraries/input.rst b/user_guide_src/source/libraries/input.rst
index 4464e0f..3bc0967 100644
--- a/user_guide_src/source/libraries/input.rst
+++ b/user_guide_src/source/libraries/input.rst
@@ -237,6 +237,10 @@
 
 			$this->input->cookie(array('some_cookie', 'some_cookie2'));
 
+		.. note:: Unlike the :doc:`Cookie Helper <../helpers/cookie_helper>`
+			function :func:`get_cookie()`, this method does NOT prepend
+			your configured ``$config['cookie_prefix']`` value.
+
 	.. method:: server($index[, $xss_clean = NULL])
 
 		:param	mixed	$index: Value name