diff --git a/webapp/web/templates/freemarker/lib/lib-form.ftl b/webapp/web/templates/freemarker/lib/lib-form.ftl
index 4be19d79d..555ca4060 100644
--- a/webapp/web/templates/freemarker/lib/lib-form.ftl
+++ b/webapp/web/templates/freemarker/lib/lib-form.ftl
@@ -5,9 +5,9 @@
 <#-- 
     Macro: optionGroups
     
-    Output a sequence of option groups with options.
+    Output: a sequence of option groups with options.
     
-    Input is a map of option groups to lists of Option objects.
+    Input: a map of option groups to lists of Option objects.
     
     Usage: <@optionGroups groups=myOptionGroups />
 -->
@@ -24,9 +24,9 @@
 <#-- 
     Macro: options
     
-    Output a sequence of options.
+    Output: a sequence of options.
     
-    Input is a list of Option objects.
+    Input: a list of Option objects.
     
     Usage: <@options opts=myOptions />
 -->
@@ -36,4 +36,21 @@
     </#list>
 </#macro>
 
-<#---------------------------------------------------------------------------->
\ No newline at end of file
+<#---------------------------------------------------------------------------->
+
+<#-- 
+    Macro: hiddenInputs
+    
+    Output hidden inputs from a map of names to values.
+    
+    Input: a map of strings (names) to strings (values). May be null.
+    
+    Usage: <@hiddenInputs inputs />
+-->
+<#macro hiddenInputs inputs="">
+    <#if inputs?has_content>
+        <#list inputs?keys as name>
+            <input type="hidden" name="${name}" value="${inputs[name]}" />
+        </#list>
+    </#if>
+</#macro>
\ No newline at end of file