This is a demonstration of the so called refresh tag. It has many uses. For example, it can be used to set up a timed, web-based slide show. Refresh is an argument used with the http-equivalent argument of the meta tag. The form of the refresh tag is
<meta http-equiv="refresh" content="sec; URL=url">
where sec can be any number of seconds and url can be any URL. If sec is 0, then the user is kicked immediately to url. If url is blank, the user finds the current page is refreshed. Like other meta tags, this one can go in the head section of an html document. In 30 seconds from the time you downloaded this page, you will be taken to my homepage. To return here, use the Back button.