title: staruml "combined fragment" layout
body: <p>Am facing a bit of trouble getting the 'combined fragment' to sit above an activation (in a sequence diagram). </p>
  
  <p>On adding a 'combined fragment' (loop/alt/opt etc) to a section of the sequence diagram, the label and the guard condition appear 'under' the activation block and hence is obscured. </p>
  
  <p>Any idea how to fix this?</p>