diff --git a/index.adoc b/index.adoc
index 658cf1f..70ee7f5 100644
--- a/index.adoc
+++ b/index.adoc
@@ -116,10 +116,16 @@ print "hello world!\n";
 
 == The Lab Instance Interface
 
+=== Main Interface
 
 .Main Interface
 image::./main1.png[Main Interface]
 
+=== Main Interface
+
+.Lab Instance Interface
+image::./main3.png[Lab Instance Interface]
+
 
 
 == Terms
diff --git a/main3.png b/main3.png
new file mode 100644
index 0000000..aa520b0
Binary files /dev/null and b/main3.png differ