docs: function killExtraIEProcess (pid, cb) {
      var scodef = 'SCODEF:' + pid
  
      // wmic.exe : http://msdn.microsoft.com/en-us/library/aa394531(v=vs.85).aspx
      var wmic = 'wmic.exe Path win32_Process ' +
        'where "Name=\'' + PROCESS_NAME + "' and " +
        "CommandLine Like '%" + scodef + '%\'" call Terminate'
  
      exec(wmic, function (err) {
        if (err) {
          log.error('Killing extra IE process failed. ' + err)
        } else {
          log.debug('Killed extra IE process ' + pid)
        }
        cb()
      })
    }