diff --git a/user_guide_src/source/general/common_functions.rst b/user_guide_src/source/general/common_functions.rst
index 7917d32..79bd9b4 100644
--- a/user_guide_src/source/general/common_functions.rst
+++ b/user_guide_src/source/general/common_functions.rst
@@ -31,7 +31,7 @@
 is_really_writable()
 ====================
 
-.. php:function:: is_really_writeable($file)
+.. php:function:: is_really_writable($file)
 
 	:param	string	$file: File path
 	:returns:	bool
diff --git a/user_guide_src/source/general/reserved_names.rst b/user_guide_src/source/general/reserved_names.rst
index d912923..ccc17d6 100644
--- a/user_guide_src/source/general/reserved_names.rst
+++ b/user_guide_src/source/general/reserved_names.rst
@@ -25,15 +25,21 @@
 Functions
 ---------
 
+-  :php:func:`is_php()`
 -  :php:func:`is_really_writable()`
 -  ``load_class()``
+-  ``is_loaded()``
 -  ``get_config()``
 -  :php:func:`config_item()`
 -  :php:func:`show_error()`
 -  :php:func:`show_404()`
 -  :php:func:`log_message()`
+-  :php:func:`set_status_header()`
 -  :php:func:`get_mimes()`
 -  :php:func:`html_escape()`
+-  :php:func:`remove_invisible_characters()`
+-  :php:func:`is_https()`
+-  :php:func:`function_usable()`
 -  :php:func:`get_instance()`
 -  ``_exception_handler()``
 -  ``_stringify_attributes()``
@@ -66,4 +72,14 @@
 -  FOPEN_WRITE_CREATE
 -  FOPEN_READ_WRITE_CREATE
 -  FOPEN_WRITE_CREATE_STRICT
--  FOPEN_READ_WRITE_CREATE_STRICT
\ No newline at end of file
+-  FOPEN_READ_WRITE_CREATE_STRICT
+-  EXIT_SUCCESS
+-  EXIT_ERROR
+-  EXIT_CONFIG
+-  EXIT_UNKNOWN_FILE
+-  EXIT_UNKNOWN_CLASS
+-  EXIT_UNKNOWN_METHOD
+-  EXIT_USER_INPUT
+-  EXIT_DATABASE
+-  EXIT__AUTO_MIN
+-  EXIT__AUTO_MAX
\ No newline at end of file