diff --git a/doc/c64.sgml b/doc/c64.sgml
index ece779d30..873a1707b 100644
--- a/doc/c64.sgml
+++ b/doc/c64.sgml
@@ -329,6 +329,10 @@ configuration.
 
 <sect>Other hints<p>
 
+<sect1>Escape code<p>
+
+For an Esc press CTRL and [ key.
+
 <sect1>Passing arguments to the program<p>
 
 Command line arguments can be passed to <tt/main()/. Since this is not
diff --git a/doc/vic20.sgml b/doc/vic20.sgml
index 84addb3ca..6d6b18321 100644
--- a/doc/vic20.sgml
+++ b/doc/vic20.sgml
@@ -180,6 +180,10 @@ No VIC1011 drivers are currently available for the VIC20.
 
 <sect>Other hints<p>
 
+<sect1>Escape code<p>
+
+For an Esc press CTRL and [ key.
+
 <sect1>Passing arguments to the program<p>
 
 Command line arguments can be passed to <tt/main()/. Since this is not