--- loncom/xml/londefdef.pm	2006/01/27 23:56:55	1.317
+++ loncom/xml/londefdef.pm	2006/02/04 22:11:42	1.318
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Tags Default Definition Module 
 #
-# $Id: londefdef.pm,v 1.317 2006/01/27 23:56:55 albertel Exp $
+# $Id: londefdef.pm,v 1.318 2006/02/04 22:11:42 foxr Exp $
 # 
 #
 # Copyright Michigan State University Board of Trustees
@@ -3179,6 +3179,7 @@ sub start_pre {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\begin{verbatim}';
+	&Apache::lonxml::disable_LaTeX_substitutions;
     } 
     return $currentstring;
 }
@@ -3190,6 +3191,7 @@ sub end_pre {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\end{verbatim}';
+	&Apache::lonxml::enable_LaTeX_substitutions;
     }
     return $currentstring;
 }