If you see a topic on RootsChat that you wish to reply to, it is very easy.
Whilst viewing the topic click on the Reply button.

It will be at the top and the bottom of the message thread.
A new window will open, and you simply type your reply in the big box marked
Message:When you are done, you can check to see what it will look like by clicking
Preview under the body of the message. If you want to change anything, you simply amend the text you have typed in the
Message box.
If you are happy with it, click
Post and it will be posted onto the forum.