Thank you very much. I had a problem with counting [ and ] as iterations.

so I was wrong: the wrap occurs on each individual row (back to front and front to back) and not from row front to other row back. Also what wasn't really clear from the instructions: don't count ] as iteration if it's not activated. [ does always count as iteration.

I'm getting toroidal/wrap issues but when I test it for what I can tell it works fine, so I think it may be an issue of how I interpret it :-/ for a [00][00] "w*",2,2,2 should it be [01][00] or [00][01]? Like I interpret it, it should be the last but maybe the former is meant? Alternatively if anyone has some decent test command strings and their outcome, that woul also be appreciated.