Documentation: another update to reserved names list
Added missing user functions.
Also fixed a typo in common_functions.rst.
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 1ca3b60..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()``