The attribute http-equiv is also paired with "content".
refresh
<meta http-equiv="refresh" content="refresh value in seconds">
Directs the page to reload in a number of seconds.
Refresh can also be used to redirect and load another page. <meta http-equiv="Refresh" content="3"; url=http://www.name.com">
expires
<meta http-equiv="expiries"
content="day, date and time GMT">
Gives the time and day in which the information on the page expiries. Web robots may then delete the information from their database.
pragma
<meta http-equiv="pragma"
content="No- Cache">
Instructs that cache information to not be used by the search engines.