diff --git a/slides/chapter-02.en.md b/slides/chapter-02.en.md
index b05c719..c91e254 100644
--- a/slides/chapter-02.en.md
+++ b/slides/chapter-02.en.md
@@ -91,21 +91,3 @@ You get the backslash by pressing
 <kbd>Alt</kbd>&nbsp;+&nbsp;<kbd>Shift</kbd>&nbsp;+&nbsp;<kbd>7</kbd>&nbsp;(MacOS)
 
 
-@slide(layout=wide-content)
-
-@title
-Optional parameters
-
-@content
-Square brackets may contain different numbers of optional parameters:
-
-``` {.lang-tex .hljs}
-\usepackage[utf8]{inputenc}
-% configures the text encoding
-
-\documentclass[a4paper,12pt]{article}
-% configures the document class
-
-\includegraphics[width=12cm,height=4cm]{image.png}
-% embeds the image file "image.png"
-```