document that scratch variables are now available in all templates

lib/WebGUI/Help/Asset_Template.pm

@@ -84,7 +84,10 @@ our $HELP = {
 			  },
 			  {
 			    'name' => 'session form variables'
-			  }
+			  },
+			  {
+			    'name' => 'session scratch variables'
+			  },
 		],
 		related => [
 		]

lib/WebGUI/i18n/English/Asset_Template.pm

@@ -280,6 +280,14 @@ If there is more than 1 value in a form variable, only the last will be returned
 		lastUpdated => 1148951191,
 	},
 
+	'session scratch variables' => {
+		message => q|<b>Session Scratch Variables</b><br />
+Any scratch variables will be available in the template with this syntax:<br/>
+&lt;tmpl_var session.scratch.<i>variable</i>&gt;<br />
+|,
+		lastUpdated => 1165343240,
+	},
+
 	'template variable body' => {
 		message => q|
 <p>These variables are available in any template, regardless of its type