for clarification:
good: notice how it connects the events
<img src="http://files.getdropbox.com/u/1013446/goodelse.PNG">
good for subevents, too
<img src="http://files.getdropbox.com/u/1013446/goodsubelse.PNG">
this is what I meant you can't do
<img src="http://files.getdropbox.com/u/1013446/badelse.PNG">
or this
<img src="http://files.getdropbox.com/u/1013446/orelse.PNG">