--- a/text/basic_properties.tex	Tue Feb 08 13:15:46 2011 -0800
+++ b/text/basic_properties.tex	Wed Feb 09 18:21:58 2011 -0800
@@ -113,6 +113,7 @@
 The sum is over all fields $a$ on $Y$ compatible at their
 ($n{-}2$-dimensional) boundaries with $c$.
 ``Natural" means natural with respect to the actions of diffeomorphisms.
+In degree zero the map agrees with the gluing map coming from the underlying system of fields.
 \end{prop}
 
 This map is very far from being an isomorphism, even on homology.