At this stage, you can post a new message on the topic (each message is referred to as a ZDiscussions item), reply to existing messages, or search existing posts for a particular text string. Posting a message is the fundamental activity here - this message may either be the start of a new thread, or an addition to an existing thread.
In order to post a new message, use the "Post" function that appears near the top of the discussion board.
The resulting form allows you to enter basic user information - your name and email address - together with the contents of your post.
Once submitted, your post will appear in the ZDiscussions discussion tree at the root level (since it is a new message).
In the event that you would like to reply to an existing post, simply click on the message link and use the "Reply" function on the corresponding message page. Again, you'll be presented with a similar form,
and your message will be attached to the discussion tree at the appropriate node.
Notice how the number of replies to each thread in the discussion board is recorded and displayed to the user - this is an easy way to identify which topics are "hot", or generating the maximum amount of user activity.