title: Go to another sequence in sequence diagram?
body: <p>I have a <code>register</code> and <code>login</code> sequence diagram. I also have <code>login FB</code> sequence which have those conditions :</p>
  
  <ol>
  <li>If user never login with his FB before, the system will <code>register</code> him and do <code>login</code> automatically.</li>
  <li>If user have logged in with FB before, the system will just do <code>login</code> without registering him.</li>
  </ol>
  
  <p>The problem is, the <code>login</code> and <code>register</code> already have their own respective sequence diagram. Simply copy-paste those 2 diagrams into <code>login FB</code> will solve the problem, but my diagram will be hard to read and it will be very long. </p>
  
  <p><strong>I hope there is a way  to just say something like : go to login sequence diagram</strong></p>
  
  <p>Please kindly help me. Thanks for your help.</p>