Thank you for all of your comments - my partner and I were not sure how to treat this auction. I meant 4 spades as a splinter, partner thought it was Exclusion and bid 4NT, which I thought was RKC (14-30) so I bid 5 spades and we ended up in ...
Henry, I don't really know you but I know enough to know that you know what you're talking about. I admire you for this post and for taking the time to help Polly. I don't remember who said it, but I know there are many mistakes made ...