Update README.md

tdp2110 · Sep 21, 2021 · 1c41e32 · 1c41e32
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diff --git a/README.md b/README.md
@@ -178,7 +178,7 @@ Welcome to lox! using tree-walk interpreter.
 
 ## Extensions
 
-Using the `--Xlists` command line switch, we can enable lists
+Using the `--Xlists` command line switch (eg `cargo run --release --quiet -- --Xlists`), we can enable lists
 
 ```
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