i had to look up a couple of Wikipedia articles to understand what you explained, i think i managed to visualise it. Interesting, i was always wondering how life guards are able to swim AND bring someone.
will try soon!
oh. damn, you kinda took out the fun & mystery lol
You are right I just found that button and yes it does dim lights on/off. So this is the final explanation
thank you I had to look up "riptide". I also got stung by a meduse/algae today so that's fun, at least i know what it feels like