to be honest, i haven't head of this stitch before, either.
But the great thing here on Crazypatterns is, you can contact every author of a pattern directly if you have any questions.
Just go back to the site of the pattern, there you'll find the author - and when you click on the author's name, you'll see where you can contact them. .... Or perhaps they also have an email-address posted within the pattern somewhere.