When reading a thread, you may notice a button off to the far right labeled, "Quote". That button suggests that if you want to quote that poster's words, you'd click and then respond in a window that copies that quoted post. So far, all I have seen is a space open at the very top of my screen saying, "Loading...." but nothing ever does.
I know this isn't a big deal as the buttons available when posting include another quote button that is a generic way to add a quote to your post (it adds "quote, /quote" within brackets where you can past the words you want to show as a quote).
This to me is minor but thought I'd mention it.