tweak advanced
[lambda.git] / miscellaneous_lambda_challenges_and_advanced_topics.mdwn
index a3d65e2..dafb3d5 100644 (file)
@@ -500,11 +500,11 @@ can use.
        *leaf* of the tree, or it will have exactly two children.
 
        There are two kinds of trees to think about. In one sort of tree, it's only
-       the tree's *leaves* that are labeled:
+       the tree's leaves that are labeled:
 
-                   +
+                   .
                   / \ 
-          +   3
+          .   3
                 / \
                1   2