2014-05-02: polish

polish

diff --git a/examples/d20world.w b/examples/d20world.w
--- a/examples/d20world.w
+++ b/examples/d20world.w
@@ -12,6 +12,7 @@
 define world : make-vector 20
 define neighbors : make-vector 20
 ; count from the top
+
 ; Contains the numbers instead of the indexes, to make it easier for
 ; me to think about them.
 ;