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doc/manual/source/language/expression/let.md

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+# Let Expression
+
+A `let` expression creates local bindings.
+
+```dcdl
+let
+    base = 8000;
+    offset = 80;
+in
+    base + offset
+```
+
+## Evaluation
+
+A binding is evaluated when it is referenced.
+An unreferenced binding is not evaluated, and the result is reused if the same binding is referenced several times.