Hi mental,

> Well, let's assume we've got persistence.  What would you expect
> each of the following to do?

[...]

ok, rethinking and withdrawing my answer....

Your examples are pretty good. I think I come to the conclusion that
it is pretty hard to find a way to manipulate the counter in a for-loop. 

This would still allow something like 'skip next n elements', since we
are walking along a sequence. 

Thanks for these good examples,

Patrick