145. Use History
BEFORE YOU BEGIN
142 Navigate the Web
After browsing the Web and viewing many different pages, you might find yourself wishing you could return to some previously viewed page and look at it again. The trouble is, you don't exactly remember the Web site on which you saw the page. Luckily, Firefox maintains a history of the web pages you've viewed, and you can use that history to revisit a previously viewed page.
Firefox normally maintains a nine-day history, including today. You can maintain a larger or smaller history file as desired (a smaller history file takes up less room on the hard disk). To change the history file size , choose Tools, Options and on the Privacy page, under History , set the Remember visited pages for the last XX days to the value you want to use and click OK .
Although Firefox maintains a history of pages you've visited, it's only a listing of the web pages' addresses and not their content. When a page is redisplayed, its current content is shown. If you want to save the content of a page for viewing later (and not have it change), see 150 Save a Web Page .
You can search the History listing for a particular page if you like; just click in the Search box on the History sidebar, type the search text, and press Enter . Firefox searches its list of web page titles for a match.