--- a/text/deligne.tex	Fri Jul 15 15:03:22 2011 -0700
+++ b/text/deligne.tex	Sat Jul 16 11:39:58 2011 -0600
@@ -110,7 +110,7 @@
 	(\ldots, N_{i-1}, N_i, N_{i+1}, \ldots) &\to& (\ldots, N_{i-1}, N'_i, N''_i, N_{i+1}, \ldots) \\
 	(\ldots, R_{i-1}, R_i, R_{i+1}, \ldots) &\to& 
 						(\ldots, R_{i-1}, R_i\cup M''_i, R_i\cup N'_i, R_{i+1}, \ldots) \\
-	(\ldots, f_{i-1}, f_i, \ldots) &\to& (\ldots, f_{i-1}, \rm{id}, f_i, \ldots) .
+	(\ldots, f_{i-1}, f_i, \ldots) &\to& (\ldots, f_{i-1}, {\rm{id}}, f_i, \ldots) .
 \end{eqnarray*}
 (See Figure \ref{xdfig1}.)
 \begin{figure}[t]