Index: openacs-4/packages/notifications/www/unsubscribe.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/notifications/www/unsubscribe.tcl,v
diff -u -r1.1 -r1.2
--- openacs-4/packages/notifications/www/unsubscribe.tcl	24 May 2005 21:10:47 -0000	1.1
+++ openacs-4/packages/notifications/www/unsubscribe.tcl	27 Oct 2014 16:41:51 -0000	1.2
@@ -1,12 +1,12 @@
 ad_page_contract {
 
-    @author Natalia P�rez (nperper@it.uc3m.es) 
+    @author Natalia Pérez (nperper@it.uc3m.es) 
     @creation_date 2005-03-28
     
 } {
-    object_id:notnull
-    request_id:multiple
-    type_id
+    object_id:naturalnum,notnull
+    request_id:naturalnum,multiple
+    type_id:naturalnum,notnull
     return_url         
 }