progress on procs

content/procs.md

@@ -1,4 +1,14 @@
 ---
 title: Procedures
 ---
-# Procedures
+# 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
+```