Once you are on a WebChat page it's very simple. Whenever you want to receive the latest in the conversation, click on the CHAT button. Any new conversation will be sent to you, along with a few of the paragraphs you've already seen (for context). The new messages will be near the top of your screen, with a red arrow pointing at it. If there is nothing new the server will simply omit the red arrow.
If you want to scroll back further in the conversation than the eight messages on the page, enter the number of messages to scroll back in the scroll back box and then click on the Chat button.
How do I Send a Message?
All you need to do to send a message is type it into the big text entry area on the screen and then click on CHAT.
Of course, if you want to be known by something other than the name "Anonymous", it would be good to fill in the HANDLE box before you send something. You can call yourself anything you want, though you should be consistent with what you use, and you should never explicitly or implicitly misrepresent yourself as someone else.
To send a live hyptertext link in your text, type in the full address of the page you want to point to.