diff --git a/bn.rkt b/bn.rkt
index 936fc12..b4932c3 100644
--- a/bn.rkt
+++ b/bn.rkt
@@ -8,14 +8,14 @@
 ;;; The variables to be updated at each step are given by the mode.
 
 
-;; A state of a Boolean network is a mapping from the variables of the
-;; network to their Boolean values.
+;;; A state of a Boolean network is a mapping from the variables of the
+;;; network to their Boolean values.
 (define-type State (HashTable Symbol Boolean))
 
-;; An update function is a Boolean function computing a Boolean value
-;; from the given state.
+;;; An update function is a Boolean function computing a Boolean value
+;;; from the given state.
 (define-type UpdateFunc (-> State Boolean))
 
-;; A Boolean network is a mapping from its variables to its update
-;; functions.
+;;; A Boolean network is a mapping from its variables to its update
+;;; functions.
 (define-type Network (HashTable Symbol UpdateFunc))