diff --git a/detail.php b/detail.php
index 13ba1b9..ca8f897 100644
--- a/detail.php
+++ b/detail.php
@@ -37,7 +37,7 @@ if (!defined('DOKU_INC')) die();
             <h1><?php echo hsc(tpl_img_getTag('IPTC.Headline',$IMG))?></h1>
 
             <div class="content">
-                <?php tpl_img(900,700) ?>
+                <?php tpl_img(900,700); /* parameters: maximum width, maximum height (and more) */ ?>
 
                 <div class="img_detail">
                     <h2><?php print nl2br(hsc(tpl_img_getTag('simple.title'))); ?></h2>