diff --git a/scripts/focus.py b/scripts/focus.py
index 6e28e02..3bf7359 100644
--- a/scripts/focus.py
+++ b/scripts/focus.py
@@ -1,4 +1,8 @@
 #!/usr/bin/env python
+
+#Focusing up for 345 micro steps : 
+#python3.7 path/to/file/focus.py 345 up
+
 from adafruit_motor import stepper
 from adafruit_motorkit import MotorKit
 from time import sleep