How to know the handle of first create tab in webdriver? If my code is below:   #include "wd_core.au3" #include "wd_helper.au3" Local $sDesiredCapabilities, $sSession SetupGecko() _WD_Startup() $sSession = _WD_CreateSession($sDesiredCapabilities) ;========================================================================= $sTab1 = _WD_NewTab($sSession) _WD_Navigate($sSession, "https://www.xzy.xzy/") $sTab2 = _WD_NewTab($sSess