Exploring the topics
You can navigate the tree of topics the same way as any other tree control.
The GUI populates the tree on-demand and asynchronously, so a branch of the tree might be populated some short time after it has been opened. Each topic shows its name, the publisher, the type of any topic-data associated, the date-stamp the topic was created, the date-stamp the topic was last updated and the value of that topic. The last two are populated only if the topic is fetched or subscribed.
The topic tree is live and as new topics are created and old topics deleted so the tree is updated.