Update UG

Author: MGatner

system/View/View.php

@@ -155,7 +155,7 @@ public function __construct(ViewConfig $config, string $viewPath = null, FileLoc
 	 *  - cache      Number of seconds to cache for
 	 *  - cache_name Name to use for cache
 	 *
-	 * @param string       $view     The view contents
+	 * @param string       $view     File name of the view source
 	 * @param array        $options  Reserved for 3rd-party uses since
 	 *                               it might be needed to pass additional info
 	 *                               to other template engines.

user_guide_src/source/outgoing/view_renderer.rst

@@ -102,6 +102,9 @@ Several options can be passed to the ``render()`` or ``renderString()`` methods:
 		ignored for renderString()
 -   ``saveData`` - true if the view data parameters should be retained for subsequent calls
 
+.. note:: ``saveData`` as defined by the interface must be a boolean, but implementing
+	classes (like ``View`` below) may extend this to include ``null`` values.
+
 Class Reference
 ***************
 
@@ -110,9 +113,9 @@ Class Reference
 	.. php:method:: render($view[, $options[, $saveData=false]])
                 :noindex:
 
-		:param  string  $view: File name of the view source
-		:param  array   $options: Array of options, as key/value pairs
-		:param  boolean $saveData: If true, will save data for use with any other calls, if false, will clean the data after rendering the view.
+		:param  string       $view: File name of the view source
+		:param  array        $options: Array of options, as key/value pairs
+		:param  boolean|null $saveData: If true, will save data for use with any other calls. If false, will clean the data after rendering the view. If null, uses the config setting.
 		:returns: The rendered text for the chosen view
 		:rtype: string
 
@@ -123,9 +126,9 @@ Class Reference
 	.. php:method:: renderString($view[, $options[, $saveData=false]])
                 :noindex:
 
-		:param  string  $view: Contents of the view to render, for instance content retrieved from a database
-		:param  array   $options: Array of options, as key/value pairs
-		:param  boolean $saveData: If true, will save data for use with any other calls, if false, will clean the data after rendering the view.
+		:param  string       $view: Contents of the view to render, for instance content retrieved from a database
+		:param  array        $options: Array of options, as key/value pairs
+		:param  boolean|null $saveData: If true, will save data for use with any other calls. If false, will clean the data after rendering the view. If null, uses the config setting.
 		:returns: The rendered text for the chosen view
 		:rtype: string