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 title: Procedures
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-# Procedures
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+# Procedures
+
+Procedures in Nimrod are declared using `proc` and require that their parameter and return types be annotated. After the types and parameters, an `=` is used to denote the start of the function body.
+
+``` nimrod
+proc fibonacci(a, b, n: int): int =
+  if n > 1:
+    result = fibonacci(b, a+b, n - 1)
+  else
+    a
+```
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