diff -r 7dbd0a097e44 -r d382dacfd73f rt/vmtest/src/main/java/org/apidesign/bck2brwsr/vmtest/Compare.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rt/vmtest/src/main/java/org/apidesign/bck2brwsr/vmtest/Compare.java	Tue Feb 26 16:54:16 2013 +0100
@@ -0,0 +1,45 @@
+/**
+ * Back 2 Browser Bytecode Translator
+ * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. Look for COPYING file in the top folder.
+ * If not, see http://opensource.org/licenses/GPL-2.0.
+ */
+package org.apidesign.bck2brwsr.vmtest;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/** Can be applied on a method that yields a return value. 
+ * Together with {@link VMTest#create} it can be used to write
+ * methods which are executed in real VM as well as JavaScript VMs and
+ * their results are compared.
+ *
+ * @author Jaroslav Tulach <jtulach@netbeans.org>
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.METHOD)
+public @interface Compare {
+    /** Specifies whether the system should internal JavaScript interpreter
+     * as available via {@link javax.script.ScriptEngine}. Defaults to true,
+     * but in some situations (benchmarking comes to my mind), one may set this
+     * to <code>false</code>. In such case only browsers provided via
+     * <code>vmtest.brwsrs</code> property are used. For example
+     * <code>"vmtest.brwsrs=firefox,google-chrome"</code> would run the test
+     * in HotSpot VM, firefox and chrome and would compare the results.
+     * @return 
+     */
+    boolean scripting() default true;
+}