add <a id=little-h>

diff --git a/topics/week4_fixed_point_combinators.mdwn b/topics/week4_fixed_point_combinators.mdwn
index 3ac5db3..9c32b04 100644 (file)
--- a/topics/week4_fixed_point_combinators.mdwn
+++ b/topics/week4_fixed_point_combinators.mdwn
@@ -269,6 +269,7 @@ it's not complete, since we don't know what value to use for the
 symbol `LENGTH`.  Technically, it has the status of an unbound
 variable.
 
+<a id=little-h></a>
 Imagine now binding the mysterious variable, and calling the resulting
 term `h`: