src/Pure/Concurrent/simple_thread.scala

     thread.setDaemon(daemon)
     thread.start
     thread
   }
 
-  /* future result */
+  def fork(body: => Unit): Thread = fork()(body)
+
+
+  /* future result via thread */
 
   def future[A](name: String = "", daemon: Boolean = false)(body: => A): Future[A] =
   {
     val result = Future.promise[A]
     fork(name, daemon) { result.fulfill_result(Exn.capture(body)) }