diff -r 51188f08c1a9 netx/net/sourceforge/jnlp/resources/Messages.properties
--- a/netx/net/sourceforge/jnlp/resources/Messages.properties	Wed Mar 11 15:00:18 2015 +0100
+++ b/netx/net/sourceforge/jnlp/resources/Messages.properties	Wed Mar 11 15:20:58 2015 +0100
@@ -1016,6 +1016,7 @@
 IWSexampleL3=Known properties
 IWSexampleL31=(key, value and default value (if different)):
 IWSexampleL32=(key and default value):
+IWSpossible=Possible:
 
 # itweb-plugin man (note, spaces (especially the one around markup) are important due to man pages markup). Only bold  tag is now recognized by ReplacingTextFormatter.
 ITWPintro= - allow to run <B>java applets </B>in your favorite <B>browser</B>
diff -r 51188f08c1a9 netx/net/sourceforge/jnlp/util/docprovider/ItwebSettingsTextsProvider.java
--- a/netx/net/sourceforge/jnlp/util/docprovider/ItwebSettingsTextsProvider.java	Wed Mar 11 15:00:18 2015 +0100
+++ b/netx/net/sourceforge/jnlp/util/docprovider/ItwebSettingsTextsProvider.java	Wed Mar 11 15:20:58 2015 +0100
@@ -48,6 +48,7 @@
 import net.sourceforge.jnlp.config.DeploymentConfiguration;
 import net.sourceforge.jnlp.config.PathsAndFiles;
 import net.sourceforge.jnlp.config.Setting;
+import net.sourceforge.jnlp.config.ValueValidator;
 import net.sourceforge.jnlp.runtime.JNLPRuntime;
 import net.sourceforge.jnlp.runtime.Translator;
 import net.sourceforge.jnlp.util.docprovider.formatters.formatters.Formatter;
@@ -165,6 +166,10 @@
                     value = fileAcronom;
                 }
             }
+            ValueValidator v = entry.getValue().getValidator();
+            if ( v != null && v.getPossibleValues()!= null && !v.getPossibleValues().trim().isEmpty() ){
+                value = value + " ("+Translator.R("IWSpossible")+" "+v.getPossibleValues()+")";
+            }
             sb.append(getFormatter().getOption(entry.getKey(), value));
         }
         return sb.toString();