Typos

Author: MGatner

user_guide_src/source/extending/common.rst

@@ -2,12 +2,12 @@
 Replace Common Functions
 ************************
 
-There a qutie a few functions necessary to CodeIgniter that need to load for use in the core classes and thus cannot
-be placed into a helper. While most users will never have any need to do this, but the option to replace these functions
-does exist for those who would like to significantly alter the CodeIgniter core. In the ``App\`` directory there is a
-file ``Common.php``, and any functions defined in there will take precedence over the versions found in
-``system/Common.php``. This is also an opportunity to create globally-available functions you intend to use throughout
-the framework.
+There a quite a few functions necessary to CodeIgniter that need to be loaded early for use in the core classes and
+thus cannot be placed into a helper. While most users will never have any need to do this, but the option to replace
+these functions does exist for those who would like to significantly alter the CodeIgniter core. In the ``App\``
+directory there is a file ``Common.php``, and any functions defined in there will take precedence over the versions
+found in ``system/Common.php``. This is also an opportunity to create globally-available functions you intend to
+use throughout the framework.
 
 .. note:: Messing with a core system class has a lot of implications, so make sure you know what you are doing before
     attempting it.