title: ArgoUML and calling a "sub-procedure"
body: <p>I don't know if its a limitation of UML 1.4, or ArgoUML, but in a sequence diagram, I want to show an object calling a method in its own class, ie calling a sub-procedure.  </p>
  
  <p>If I drag from the object to itself, nothing happens :-(</p>
  
  <p>Thanks,
  Ant</p>