How to include "quote" in thread reply.

Option A is to click the QUOTE button instead of the reply button.
Option B is to use the "Quote" button in the list with B for bold right above the text box you are typing in.
Option C is to do it yourself by typing " [ q u o t e ]" without the spaces and "[ / q u o t e ]" to finish the quote.

You may have to first click the green colored link that says Open BBCode Editor so you get access to the quote buttons that engineer refers to. There are a bunch of other formatting options there too.