diff --git a/system/core/Common.php b/system/core/Common.php
index b4f0c38..cad340f 100644
--- a/system/core/Common.php
+++ b/system/core/Common.php
@@ -424,12 +424,12 @@
 	 * We use this as a simple mechanism to access the logging
 	 * class and send messages to be logged.
 	 *
-	 * @param	string
-	 * @param	string
-	 * @param	bool
+	 * @param	string	the error level: 'error', 'debug' or 'info'
+	 * @param	string	the error message
+	 * @param	bool	whether the error is a native PHP error
 	 * @return	void
 	 */
-	function log_message($level = 'error', $message, $php_error = FALSE)
+	function log_message($level, $message, $php_error = FALSE)
 	{
 		static $_log, $_log_threshold;
 
diff --git a/system/core/Log.php b/system/core/Log.php
index a84d3dc..e4d72b5 100644
--- a/system/core/Log.php
+++ b/system/core/Log.php
@@ -138,12 +138,12 @@
 	 *
 	 * Generally this function will be called using the global log_message() function
 	 *
-	 * @param	string	the error level
+	 * @param	string	the error level: 'error', 'debug' or 'info'
 	 * @param	string	the error message
 	 * @param	bool	whether the error is a native PHP error
 	 * @return	bool
 	 */
-	public function write_log($level = 'error', $msg, $php_error = FALSE)
+	public function write_log($level, $msg, $php_error = FALSE)
 	{
 		if ($this->_enabled === FALSE)
 		{
diff --git a/tests/mocks/core/common.php b/tests/mocks/core/common.php
index 24d645a..0ccfe1e 100644
--- a/tests/mocks/core/common.php
+++ b/tests/mocks/core/common.php
@@ -178,7 +178,7 @@
 
 if ( ! function_exists('log_message'))
 {
-	function log_message($level = 'error', $message, $php_error = FALSE)
+	function log_message($level, $message, $php_error = FALSE)
 	{
 		return TRUE;
 	}
diff --git a/user_guide_src/source/_themes/eldocs/layout.html b/user_guide_src/source/_themes/eldocs/layout.html
index 51d61b8..7f2fe1a 100644
--- a/user_guide_src/source/_themes/eldocs/layout.html
+++ b/user_guide_src/source/_themes/eldocs/layout.html
@@ -81,7 +81,7 @@
 	{%- block content %}
 		<div id="table-contents">
 			<div class="toctree-wrapper compound">
-			{{ toctree(collapse=true) }}
+			{{ toctree }}
 			</div>
 		</div>
 
diff --git a/user_guide_src/source/general/common_functions.rst b/user_guide_src/source/general/common_functions.rst
index 79bd9b4..a133fdc 100644
--- a/user_guide_src/source/general/common_functions.rst
+++ b/user_guide_src/source/general/common_functions.rst
@@ -100,11 +100,11 @@
 log_message()
 =============
 
-.. php:function:: log_message($level = 'error', $message, $php_error = FALSE)
+.. php:function:: log_message($level, $message, $php_error = FALSE)
 
-	:param	string	$level: Log level
+	:param	string	$level: Log level: 'error', 'debug' or 'info'
 	:param	string	$message: Message to log
-	:param	bool	$php_error: Whether we're loggin a native PHP error message
+	:param	bool	$php_error: Whether we're logging a native PHP error message
 	:returns:	void
 
 This function is an alias for ``CI_Log::write_log()``. For more info,
diff --git a/user_guide_src/source/general/controllers.rst b/user_guide_src/source/general/controllers.rst
index 8cfb012..04f2327 100644
--- a/user_guide_src/source/general/controllers.rst
+++ b/user_guide_src/source/general/controllers.rst
@@ -214,7 +214,9 @@
 		echo $output;
 	}
 
-.. note:: Please note that your ``_output()`` method will receive the
+.. note::
+
+	Please note that your ``_output()`` method will receive the
 	data in its finalized state. Benchmark and memory usage data
 	will be rendered, cache files written (if you have caching
 	enabled), and headers will be sent (if you use that
diff --git a/user_guide_src/source/general/errors.rst b/user_guide_src/source/general/errors.rst
index a247c1b..f12d992 100644
--- a/user_guide_src/source/general/errors.rst
+++ b/user_guide_src/source/general/errors.rst
@@ -77,11 +77,11 @@
 log_message()
 =============
 
-.. php:function:: log_message($level = 'error', $message, $php_error = FALSE)
+.. php:function:: log_message($level, $message, $php_error = FALSE)
 
-	:param	string	$level: Log level
+	:param	string	$level: Log level: 'error', 'debug' or 'info'
 	:param	string	$message: Message to log
-	:param	bool	$php_error: Whether we're loggin a native PHP error message
+	:param	bool	$php_error: Whether we're logging a native PHP error message
 	:returns:	void
 
 This function lets you write messages to your log files. You must supply