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diff --git a/README.md b/README.md
index d9cd1df..7ad658c 100644
--- a/README.md
+++ b/README.md
@@ -203,6 +203,7 @@ version:
 
 ```
 G20
+M03
 ```
 
 This will only tell the machine to use inch units (`G20`) and nothing else. It