---
diff --git a/week1.mdwn b/week1.mdwn
index e8154e3c..e6591956 100644
--- a/week1.mdwn
+++ b/week1.mdwn
@@ -70,7 +70,10 @@ Examples of expressions:
(x (\x x))
((\x (x x)) (\x (x x)))
-The lambda calculus has an associated proof theory. For now, we can regard the proof theory as having just one rule, called the rule of **beta-reduction** or "beta-contraction". Suppose you have some expression of the form:
+
+The lambda calculus has an associated proof theory. For now, we can regard the
+proof theory as having just one rule, called the rule of **beta-reduction** or
+"beta-contraction". Suppose you have some expression of the form:
((\a M) N)