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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd">
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<html>
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\
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
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<link rel="stylesheet" type="text/css" href="help.css"/>
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<meta name="section" content="Preferences"/>
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<link rel="contents" type="text/css" href="toc.html"/>
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<link rel="home" type="text/css" href="index.html"/>
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<link rel="glossary" href="glossary.html"/>
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<link rel="first" href="welcome.html"/>
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<link rel="previous" href="network.html"/>
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<link rel="next" href="privacy.html"/>
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<link rel="last" href="dialogs.html"/>
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<title>Preferences, History and Cache</title>
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</head>
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<body>
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<h1 id="history">History and Cache</h1>
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<p>
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These settings fine-tune how Opera remembers Web pages you have visited.
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</p>
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<h2 id="history-history">History</h2>
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<p>
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You can specify the maximum number of addresses Opera should remember:
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</p>
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<ol class="alfa">
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<li>Back and forward addresses
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<ul>
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<li>Local history, specific to a single window or page</li>
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<li>Access through drop-down triangles on "Back" and "Forward" buttons</li>
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<li>Setting to "0" will disable "Back" and "Forward" buttons</li>
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</ul>
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</li>
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<li>Typed in addresses
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<ul>
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<li>Web addresses entered in Opera's address field</li>
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<li>Access through drop-down triangles on "Address field"</li>
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<li>Setting to "0" will disable "Address field" drop-down</li>
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</ul>
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</li>
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<li>Visited addresses
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<ul>
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<li>Global hostory, all Web resources accessed</li>
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<li>Marks links as visited</li>
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</ul>
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</li>
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</ol>
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<p>
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Press <input type="button" class="button" value="Clear"/> to clear history lists.
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</p>
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<p>
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<span class="note">Tip:</span>
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You can view your global history in the "History" panel in Opera's Hotlist, or in a <a target="_blank" href="opera:history">separate page</a>.
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</p>
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<h2 id="history-cache">Memory and disk cache</h2>
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<p>
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A cache is an archive of Web pages you have visited.
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</p>
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<h3>Memory cache</h3>
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<p>
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Opera uses your computer's memory to temporarily store recently visited Web pages.
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It is generally a good idea to let Opera handle memory caching automatically.
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</p>
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<p>
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<span class="note">Tip:</span>
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Try lowering memory cache values to browse faster on old computers.
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</p>
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<h3>Disk cache</h3>
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<p>
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Opera stores pages locally so that you can access them quickly when you revisit them.
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Increase the disk cache if you want to keep more local copies of Web pages, and keep them longer.
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</p>
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<p>
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<span class="note">Tip:</span>
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You can see the content of your current disk cache in a <a target="_blank" href="opera:cache">separate page</a>.
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</p>
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<p>
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By default, Opera will cache all content (documents, images, and other content) on Web pages, but you can set Opera to exclude for example images.
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</p>
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<p>
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<span class="note">Tip:</span>
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Select "Empty on exit" if you do not want to keep local copies of Web pages after you exit Opera.
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</p>
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<p>
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Press <input type="button" class="button" value="Empty now"/> to delete all cached content from your disk.
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</p>
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<h2 id="history-checking">Server checking</h2>
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<p>
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When you revisit Web pages, Opera normally asks for new versions even though most Web content is not updated very often.
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Some Web sites also redirect you to a different page than the one you attempt to view.
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</p>
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<p>
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Checking for changes less often, and disabling redirection checking, may speed up your browsing experience.
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</p>
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<p>
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<span class="note">Note:</span>
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If you rarely check for changes, you may sometimes have to reload a Web page to get the newest version.
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And try turning redirection checking back on if page loading suddenly halts on a particular site.
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</p>
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<p>
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<a target="_blank" href="http://www.opera.com/support/service/history/">Learn more about history and cache</a>
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</p>
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<p class="copyright">Copyright © 1995 - 2003 Opera Software ASA. <span class="nowrap">All rights reserved.</span></p>
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</body>
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</html>
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