We interrupt your rippling for a moment of International crochet clarification. (many comments on this lately...)
Crochet is one of those places where "American" and "British" get themselves in a bind.
It goes something like this:
US = UK
single crochet = double crochet
double crochet = treble crochet
treble crochet = double treble
Here's where I get confused. What is a US slip stitch in UK? I have no clue. I imagine it must be the same thing. Or half double crochet, is it called half treble? And what about chaining, is it still chaining? I think it is. And is there a British single crochet? What on earth is it? Ooo, maybe it's hdc! Chime in you over-the-ponders, inquiring minds want to know! (and if you're in New Zealand or Australia, which system is common to you?)
Anyway, that's why it's good to know where your pattern is coming from. It can all get very wonky if you don't.