Shuffles lines, reverses lines, and removes duplicates, if that's the sort of thing you are into.
Edit -> Lines -> Permute -> Shuffle
Will shuffle either the whole file or your current selection
Edit -> Lines -> Permute -> Unique
Will filter out the duplicates of either the whole file or your current selection
Edit -> Lines -> Permute -> Reverse
Will reverse either the whole file or your current selection
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.