--- a/text/ncat.tex	Wed Jun 30 08:55:46 2010 -0700
+++ b/text/ncat.tex	Sat Jul 03 13:19:15 2010 -0600
@@ -2073,6 +2073,7 @@
 \end{figure}
 Invariance under this movie move follows from the compatibility of the inner
 product for $B_1\cup B_2$ with the inner products for $B_1$ and $B_2$.
+\nn{should also say something about locality/distant-commutativity}
 
 If $n\ge 2$, these two movie move suffice: