//public void EnqueueLast(Job j, JobTag? tag = null)
 public static void EnqueueLastOrFirst(JobQueue queue, Job j, JobTag?tag = null)
 {
     if (KeyBindingDefOf.ModifierIncrement_10x.IsDown)           //ctrl
     {
         queue.EnqueueFirst(j, tag);
     }
     else
     {
         queue.EnqueueLast(j, tag);
     }
 }