< url > &optional (session
Opens an URL in the test frame. This accepts both relative and absolute URLs. The open command waits for the page to load before proceeding, ie. the AndWait suffix is implicit. Note: The URL must be on the same domain as the runner HTML due to security restrictions in the browser (Same Origin Policy). If you need to open an URL on another domain, use the Selenium Server to start a new browser session on that domain.