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+# Functions
+
+Functions in Limbo are similar to functions in Go moreso than functions in C. 
+
+## Source
+
+### func.b:13,17
+
+This section shows a function prototype as well as the succeeding function definition. Prototypes in Limbo function similar to prototypes in C. 
+
+The function `plus()` takes two integers as arguments and returns their sum. 
+
+### func.b:19,21
+
+The function `swp()` takes two integer arguments and returns two integers within a tuple. 
+
+Note that the type statement `: int` is only provided once, with the list of variables to the left of the type statement being declared to be integers. 
+
+### func.b:36,38
+
+The function `plusplus()` takes three integer arguments and returns their sum, calling the function `plus()` in the process to sum the first two arguments.
+
+The return value of `plus()` is a single variable, so it can be added to `c` without any extra syntactical structures than using the return value as an unnamed variable. 
+
+## Demo
+
+	; limbo func.b
+	; func
+	3 + 5 = 8
+	7 + 3 + 4 = 14
+	swap 6,7: 7,6
+	; 
+
+## Exercises
+
+- Try returning more than two values, can tuples store more than two ordered objects?