Index: openacs-4/packages/curriculum-central/catalog/curriculum-central.en_US.ISO-8859-1.xml
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/curriculum-central/catalog/curriculum-central.en_US.ISO-8859-1.xml,v
diff -u -r1.28 -r1.29
--- openacs-4/packages/curriculum-central/catalog/curriculum-central.en_US.ISO-8859-1.xml	11 Jan 2006 00:49:17 -0000	1.28
+++ openacs-4/packages/curriculum-central/catalog/curriculum-central.en_US.ISO-8859-1.xml	11 Jan 2006 03:52:21 -0000	1.29
@@ -2,6 +2,8 @@
 <message_catalog package_key="curriculum-central" package_version="0.1d" locale="en_US" charset="ISO-8859-1">
 
   <msg key="uos">UoS</msg>
+  <msg key="help_select_textbook_ids">Select textbooks from the list that will be used for this Unit of Study.  Hold the Ctrl key down whilst selecting to add more than one selection.</msg>
+  <msg key="none">None</msg>
   <msg key="course_content">Course Content</msg>
   <msg key="help_enter_name_of_schedule_week">Enter a name for a scheduled week.  For example, enter either Week 1, Week 2, Study Vacation, or Exam Period.</msg>
   <msg key="uos_schedule">UoS Schedule</msg>
Index: openacs-4/packages/curriculum-central/tcl/uos-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/curriculum-central/tcl/uos-procs.tcl,v
diff -u -r1.23 -r1.24
--- openacs-4/packages/curriculum-central/tcl/uos-procs.tcl	11 Jan 2006 00:49:17 -0000	1.23
+++ openacs-4/packages/curriculum-central/tcl/uos-procs.tcl	11 Jan 2006 03:52:21 -0000	1.24
@@ -1240,9 +1240,12 @@
 	set user_id [ad_conn user_id]
     }
 
+    # Create an empty option that the user can select.  The value of
+    # which is an empty string.
+    set empty_option [list [list [list [_ curriculum-central.none]] 0]]
     set method_list [db_list_of_lists assess_methods {}]
 
-    return $method_list
+    return [concat $empty_option $method_list]
 }
 
 
@@ -1698,7 +1701,7 @@
 	set week_id [lindex $week 0]
 	set course_content [lindex $week 1]
 	set assessment_ids [lindex $week 2]
-	
+
 	ad_form -extend -name $form_name -form {
 	    {${content_prefix}${week_id}:text(textarea)
 		{label "[curriculum_central::uos::get_schedule_pretty_name -week_id $week_id] [_ curriculum-central.course_content]"}
Index: openacs-4/packages/curriculum-central/www/coordinate/uos-edit.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/curriculum-central/www/coordinate/uos-edit.tcl,v
diff -u -r1.14 -r1.15
--- openacs-4/packages/curriculum-central/www/coordinate/uos-edit.tcl	11 Jan 2006 00:49:18 -0000	1.14
+++ openacs-4/packages/curriculum-central/www/coordinate/uos-edit.tcl	11 Jan 2006 03:52:21 -0000	1.15
@@ -492,7 +492,7 @@
 		    # Append week_id, content field and assessment field data.
 		    lappend schedule_fields \
 			[list $week_id [element get_value uos $content_field] \
-			     [element get_value uos $assessment_field]]
+			     [element get_values uos $assessment_field]]
 		}
 	}