diff --git a/config/keyboard/pty2.conf b/config/keyboard/pty2.conf
index f53ea061..619bd398 100644
--- a/config/keyboard/pty2.conf
+++ b/config/keyboard/pty2.conf
@@ -1,3 +1,7 @@
+# This file contains terminal escape sequences as shortcut
+# It is used for PTY screen / Input driver (Terminal emulation)
+# ^[ is used as escape
+
 ^[h=toggle_tutorial_mode
 ^[/=shut_up
 ^[[D=shut_up