* If this parameter is not given, it uses Preprocessor_DOM if the
* DOM module is available, otherwise it uses Preprocessor_Hash.
*
+ * The Preprocessor_DOM class is deprecated, and will be removed in a future
+ * release.
+ *
* The entire associative array will be passed through to the constructor as
* the first parameter. Note that only Setup.php can use this variable --
* the configuration will change at runtime via Parser member functions, so