refresh or reload
On the Web, it is to reload a Web page into your browser to see if any of the content has changed since the last time you were there. At the top of your Web browser, to the right of the back button, there is a button that enables you to do this (on IE, it is called "Refresh"; on Netscape, it is called "Reload"). To make sure you are seeing the most recent version of a Web page, hold down the Control key on your keyboard while you click on the refresh or reload button.
NetLingo Classification: Technical Terms