diff --git a/example/example.org b/example/example.org
index 4424757..ed66071 100644
--- a/example/example.org
+++ b/example/example.org
@@ -771,7 +771,11 @@ tab
    the - arcs in the graph, as it does not have access to the symbolic
    description of the function.
 
-** Threshold Boolean functions (TBF)
+** Standalone threshold Boolean functions (TBF)
+   /Note:/ Before using the objects described in this section,
+   consider whether the objects from the [[tbn][section on TBN]] aren't a
+   better fit.
+
    =dds= includes some useful definitions for working with threshold
    Boolean functions (TBF).  A TBF is defined as a vector of weights
    and a threshold.  For example, the following defines a