"inner" was just a useless feature I had implemented. It is an identifier that gives the inner for loop the, uhm, label "inner". When using break or continue statements, you can explicitly define which loop structure you want to manipulate:
Well, why did I use it all? It works perfectly alright when you drop it, because the break statement defaults to the nearest loop you're in at that moment. That was not clear to me while writing my reply, so I thought I'd add to be sure it should work.
However, if I'd wanted to stop the execution of the outer loop, I'd have to resort to labels or mangle with flag variables or the loop variable.
"break" can be used in any loop structure to terminate it's execution. That's why I used it actually, think you have an options array that is 237 elements long. Now if the iterating function finds the value "25" on third place, why traverse that whole thing any longer? So basically, the "break" should enhance performance. Though for smaller lists and on fast computers the time gain should neglectible.