diff --git a/README.md b/README.md
index c944e0a..d6cd650 100644
--- a/README.md
+++ b/README.md
@@ -12,9 +12,16 @@ usage
 - passkey will appear as USB serial port and keyboard
 - connect to it using a serial terminal (baud rate it not important)
 - enter the credentials you often have to input
-- press on the U button for passkey to input the username and password
-- press on the P button for passkey to input password
+- press on one button for passkey to input the username and password
+- press on the other  button for passkey to input password
 
-The credentials are save in RAM and will clear as soon a power is removed.
+The credentials are saved in RAM and will clear as soon a power is removed.
 You can also clear the credentials by pressing on both buttons.
 The passkey will blink until credentials are saved.
+
+Configuration available in the terminal:
+
+- which button is for which action
+- the keyboard layout used
+- global timeout to clear the credentials
+- last usage timeout to clear the credentials