Browser

In the box " Block URL contains string as follow " ,if you enter " sex " so that all URLs contain "sex " could not be visited. In the box " Only permit to visit URL contains string as follow " , if you enter yahoo.com, you can only visit yahoo.com and you can not visit other URLs. Note: Make sure to enter the default homepage in the box " Only permit to visit URL contains string as follow " , otherwise, the default homepage will be shut down.