diff --git a/plugins/wp_model_plugin/html/index.html b/plugins/wp_model_plugin/html/index.html
index 0767c80..529c290 100644
--- a/plugins/wp_model_plugin/html/index.html
+++ b/plugins/wp_model_plugin/html/index.html
@@ -1,7 +1,8 @@
-<p>i am a new p</p>
-<p class="first_el_to_change">to change</p>
-<?php
-	foreach($names as $name) {
-		include($html_dir."templates/presentation.html");
-	}
-?>
+<div id="model_plugin_shortcode">
+	<p>i am a new p</p>
+	<p class="first_el_to_change">to change</p>
+	<?php
+		foreach($names as $name) {
+			include($html_dir."templates/presentation.html");
+		}
+	?>
diff --git a/plugins/wp_model_plugin/html/index2.html b/plugins/wp_model_plugin/html/index2.html
index 094ffdc..4ad6346 100644
--- a/plugins/wp_model_plugin/html/index2.html
+++ b/plugins/wp_model_plugin/html/index2.html
@@ -1,9 +1,10 @@
-<?php
-	foreach($ages as $age) {
-		?>
-		<p>age <?php echo esc_html($age); ?></p>
-		<?php
-	}
-?>
-<p class="third_el_to_change">to change</p>
-<p>aaaaaand this is the end</p>
+	<?php
+		foreach($ages as $age) {
+			?>
+			<p>age <?php echo esc_html($age); ?></p>
+			<?php
+		}
+	?>
+	<p class="third_el_to_change">to change</p>
+	<p>aaaaaand this is the end</p>
+</div>
diff --git a/plugins/wp_model_plugin/plugin_hooks.php b/plugins/wp_model_plugin/plugin_hooks.php
index ad7664c..ec8a6d6 100644
--- a/plugins/wp_model_plugin/plugin_hooks.php
+++ b/plugins/wp_model_plugin/plugin_hooks.php
@@ -8,19 +8,22 @@ Version: 1.1.0
 Author URI:
 */
 
-/* * * * * * * * * * * * * * * * * * * * * * * *
- * globale variable to desable server side
- * console_log all at once
- */
+
+/*
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+globale variable to desable server side
+console_log all at once
+*/
 
 $CONSOLE_OFF = true;
 $CONSOLE_OFF = false;
 
 
 
-/* * * * * * * * * * * * * * * * * * * * * * * *
- * inclusions
- */
+/*
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+inclusions
+*/
 
 include_once(dirname(__FILE__) . '/utils/console_log.php');
 include_once(dirname(__FILE__) . '/utils/add_to_front.php');
@@ -29,9 +32,10 @@ include_once(dirname(__FILE__) . '/utils/create_html.php');
 
 
 
-/* * * * * * * * * * * * * * * * * * * * * * * *
- * plugin shortcode
- */
+/*
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+plugin shortcode
+*/
 
 function main_shortcode() {
 
@@ -71,9 +75,10 @@ function main_shortcode() {
 add_shortcode('wp_model_plugin', 'main_shortcode');
 
 
-/* * * * * * * * * * * * * * * * * * * * * * * *
- * menu plugin
- */
+/*
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+menu plugin
+*/
 
 function plugin_menu() {
 	add_menu_page(
diff --git a/plugins/wp_model_plugin/styles/mystyle.css b/plugins/wp_model_plugin/styles/mystyle.css
index 76d5017..bf327c8 100644
--- a/plugins/wp_model_plugin/styles/mystyle.css
+++ b/plugins/wp_model_plugin/styles/mystyle.css
@@ -1,3 +1,7 @@
 .first_el_to_change {
 	border: 1px solid red;
 }
+#model_plugin_shortcode {
+	border: 1px solid blue;
+	padding: 10px;
+}
diff --git a/plugins/wp_model_plugin/utils/add_to_front.php b/plugins/wp_model_plugin/utils/add_to_front.php
index 9f9c34b..46a21e2 100644
--- a/plugins/wp_model_plugin/utils/add_to_front.php
+++ b/plugins/wp_model_plugin/utils/add_to_front.php
@@ -1,5 +1,9 @@
 <?php
 
+/*
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+@param an array of files
+*/
 function add_files_to_front($files_arr) {
 	//wp_enqueue_script(<give_it_a_name>, /url/to/file, [depends on], version, defer? );
 	//wp_enqueue_style( <give_it_a_name>, /url/to/file, [depends on], version, media );
@@ -31,11 +35,14 @@ function add_files_to_front($files_arr) {
 	}
 }
 
-# this function expect an array of key => value
-# with the key being name of the variable, like this :
-#   'my_var' => 'value',
-# simpler way to do it is to use compact when calling the function :
-#   add_var_to_front(compact("var1", "var2", "var3"));
+/*
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+@param expect an array of key => value
+with the key being name of the variable, like this :
+  'my_var' => 'value',
+simpler way to do it is to use compact when calling the function :
+  add_var_to_front(compact("var1", "var2", "var3"));
+*/
 function add_var_to_front($var_array) {
 	extract($var_array);
 
diff --git a/plugins/wp_model_plugin/utils/console_log.php b/plugins/wp_model_plugin/utils/console_log.php
index 9b98328..0417430 100644
--- a/plugins/wp_model_plugin/utils/console_log.php
+++ b/plugins/wp_model_plugin/utils/console_log.php
@@ -1,6 +1,9 @@
 <?php
-// https://stackify.com/how-to-log-to-console-in-php/
 
+/*
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+https://stackify.com/how-to-log-to-console-in-php/
+*/
 function console_log($output) {
 	global $CONSOLE_OFF;
 	if ($CONSOLE_OFF)
diff --git a/plugins/wp_model_plugin/utils/create_html.php b/plugins/wp_model_plugin/utils/create_html.php
index 09cb99c..4e0b98d 100644
--- a/plugins/wp_model_plugin/utils/create_html.php
+++ b/plugins/wp_model_plugin/utils/create_html.php
@@ -1,15 +1,28 @@
 <?php
 
-# using ob_start() and ob_get_clean()
-# allows to have php expansion inside the html loaded
-# in opposition to the methode file_get_contents()
-#
-# https://stackoverflow.com/a/4402045/9497573
+/*
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+@param two arguments :
+1. html files to include in front
+   - can be a string of 1 filename
+   - or an array of strings of filenames
+   ( https://stackoverflow.com/q/4747876/9497573 )
+2. list of variables to make available to this files
+   - in the form of key => val
+   - recommanded to do it with compact()
+ex: create_html( "file.html", compact("var1","var2",) );
+ex: create_html( array("file1.html", "file2.html"), array("var1"=>"value") );
+@return a string of html code
 
-# takes two arguments :
-# a list of the html files to include in front
-# a list of variables to make available to this files
+using ob_start() and ob_get_clean()
+allows to have php expansion inside the html loaded
+in opposition to the methode file_get_contents()
+
+https://stackoverflow.com/a/4402045/9497573
+*/
 function create_html($files, $vars) {
+	$files = (array)$files;
+
 	$html_dir = plugin_dir_path(__DIR__).'html/';
 	extract($vars);