Forum Help - Quote

Click the quote button. Scroll down to the reply box. A notice on blue says "You have selected one or more posts to quote. Quote these posts now or deselect them." Now, to use the quote you need to click on the bit that says "You have selected one or more posts to quote. Quote these posts.." If you click on the bit that says "... now or deselect them." the quote is deselected. So be careful where you put your mouse.

And to me it seems that "quote" is similar to "quick reply" and "reply" is similar to "new reply" in that the one gives a simple box, the other gives the full works editing bits.