Burp Repeater opens each new HTTP or WebSocket message in a new tab. This enables you to work on multiple messages at once.
You can use the controls on the tab header to create new tabs and make various changes to existing ones:
Switch tab view - Right-click a tab and select Tab view settings. You can choose from two different views:
Close tabs - You can close tabs in multiple ways:
You can send a request to Repeater from a request that is already in Repeater - a new tab is created with another instance of the same request.
You can use Repeater's tab group feature to group related tabs together and send groups of HTTP requests in sequence.