say you have a royal on the flop and want to slow play it check call any while you run off to toliet to relieve the bladder seems an option i have to use every day
That is hilarious. Genuinely the only time I can think of when this ridiculous advance box could possibly be useful in a NL game. The only reason it exists is because developers are lazy when it comes to software conversion from the earliest Limit varieties into the now-popular NL.
There's no excuse for new proprietary software to have this option - when reviewing sites on the Mason-Immanuel Scale of Usability (where 10 is 'can't think of improvements' and 1 is 'designed by child having asked best mate for rules of poker') NOT having a check/call any button gives them an automatic 5, no matter how shoddy the rest of the programming is.
I reckon Stars, which in so many respects is so far ahead of the competition, should ask how often players have
(a) used the NL check/call Any button with great effect, wherein they cunningly made the maximum from their nut hands, or nipped off those bluffs with a spot-on call of Any amount
(b) accidentally ticked it and found that to have been a -EV move.