diff --git a/include/functions.php b/include/functions.php
index b9443c0..2243c52 100644
--- a/include/functions.php
+++ b/include/functions.php
@@ -1,138 +1,148 @@
 <?php
 # boz-mw - Another MediaWiki API framework
 # Copyright (C) 2019, 2020, 2021 Valerio Bozzolan
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 # GNU Affero General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 
 /**
  * Shortcuts very useful when you are creating a bot
  */
 
 /**
  * Get a single wiki from its UID
  *
  * Some known UIDs:
  *  wikidatawiki - Wikidata
  *  commonswiki  - Wikimedia Commons
  *  metawiki     - Meta-wiki
  *  itwiki       - Wikipedia (it)
  *
  * @param string $uid
  * @return mw\StaticSite
  */
 function wiki( $uid ) {
 	return \web\MediaWikis::findFromUID( $uid );
 }
 
 /**
  * Get Wikidata
  *
  * @return wm\Wikidata
  */
 function wikidata() {
 	return wiki( 'wikidatawiki' );
 }
 
 /**
  * Get Wikimedia Meta-wiki
  *
  * @return wm\MetaWiki
  */
 function meta() {
 	return wiki( 'metawiki' );
 }
 
 /**
  * Get Wikimedia Commons
  *
  * @return wm\Wikidata
  */
 function commons() {
 	return wiki( 'commonswiki' );
 }
 
 /**
  * Get the Italian Wikipedia
  *
  * @return wm\WikipediaIt
  */
 function itwiki() {
 	return wiki( 'itwiki' );
 }
 
 /**
  * Get the Wikimedia CH members wiki
  *
  * @return web\WikimediaCH
  */
 function wmch() {
 	return wiki( 'wmch' );
 }
 
 /**
  * Merge your custom page objects with the API response pages
  *
  * Useful when you try to retrieve informations from many pages
  * with less request as possible.
  *
  * @param $response_query   object
  * @param $my_stuff         array
  * @param $query_containers array|string e.g. 'query'
  * @param $page_containers  string e.g. 'pages' or 'users'
  * @return array
  */
 function response_matcher( $response_query, $my_stuff, $query_containers = [], $page_container = null ) {
 	return new \mw\API\PageMatcher( $response_query, $my_stuff, $query_containers, $page_container );
 }
 
 /**
  * Enable debug mode
  *
  * @param $status status Enable debug or not
  */
 function bozmw_debug( $status = true ) {
 	\cli\Log::$DEBUG = $status;
 }
 
 /**
  * Serialize some data and write into a file
  *
  * @param $file string File path
  * @param $data mixed Your data
  */
 function file_put_data( $file, $data ) {
 	$data_raw = serialize( $data );
 	file_put_contents( $file, $data_raw );
 }
 
 /**
  * Unserialize some data from a file
  *
  * @param $file string File path
  * @return mixed Data
  */
 function file_get_data( $file ) {
 	$contents = file_get_contents( $file );
 	return unserialize( $contents );
 }
 
 /**
  * Shortcut to get the Opts class
  *
  * It's useful to get and set your command line argument list
  */
 function cli_options() {
 	return \cli\Opts::instance();
 }
 
+/**
+ * Load a configuration file
+ *
+ * If the file does not exist, a wizard will help you in the creation.
+ *
+ * @param string $file Filename
+ */
+function config_wizard( $file ) {
+	return \cli\ConfigWizard::requireOrCreate( $file );
+}