How does World of Warcraft filter information?

This is obviously because the interface in the whole plug-in separates the chat information from the combat information. Warcraft default battle record and chat record are stacked together. Some plug-in interfaces will display them separately, just drag and drop them together manually. After being superimposed together, the two titles of battle record and chat record will be automatically hidden, and the title will be displayed when the mouse points to the record display area. When you click on the battle record, you will display the battle record and hide the chat record. On the contrary, when you click on the chat log, you will display the chat log and hide it.