text: The page history contains a list of the page 's previous revisions , including the date and time ( in UTC ) of each edit , the username or IP address of the user who made it , and their edit summary .
simplified: The page history has a list of the page 's previous revisions . The revisions include the date and time ( in UTC ) of each change , the name or IP address of the user who made it , and the summary of the change .