So, on the train back on Wednesday I thought of a way of explaining continuations. This morning, I finally wrote it up as a blog post: http://www.bofh.org.uk/articles/2007/03/15/the-commenting-problem Please let me know if it helps. -- Piers Cawley <pdcawley at bofh.org.uk> http://www.bofh.org.uk/