From the manual
Get the index (number of repeats so far) in any currently running loop."
My question is... would someone explain this to me in layman's terms? - I understand that, you can use it to 'fix' wait loops as explained here
I saw it referenced in this thread about infinite spawn enemies - viewtopic.php?f=147&t=151820&p=960011&hilit=Disable+group#p960011
And I was wondering what other ways could you apply this?