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@@ -44,7 +44,7 @@ The Simple language is styled after a subset of C or Java.
with constants. Peephole optimization / simple constant folding.
* [Chapter 3](docs/chapter03/README.md): Local variables, and assignment statements. Read on RHS, SSA, more peephole optimization if local is a
constant.
-* Chapter 4: A non-constant external variable input
+* [Chapter 4](docs/chapter04/README.md): A non-constant external variable input
named `arg`. Binary and Comparison operators involving constants and `arg`.
Non-zero values will be truthy. Peephole optimizations involving algebraic
simplifications.