How to use this forum!

Anyone can view and post messages on this forum without registering. Just click the title of topic category, as "Conference, general" then a topic list will open. To post a message, click the "new topic" icon on the above left of the topic box. If the username you chose was taken by the registered user, you cannot post the message successfully. In that case, enter the different username.
Hope people can use this system easily and find it convenient.