Editing Online and offline (section)

===Offline browsing===
{{main|Offline browsing|}}
A third example of a common use of these concepts is a [[web browser]] that can be instructed to be in either online or offline states. The browser attempts to fetch pages from servers while only in the online state. In the offline state, or "offline mode", users can perform '''offline browsing''', where pages can be browsed using local copies of those pages that have previously been downloaded while in the online state. This can be useful when the computer is offline and connection to the Internet is impossible or undesirable. The pages are downloaded either implicitly into the web browser's own [[browser cache|cache]] as a result of prior online browsing by the user or explicitly by a browser configured to keep local copies of certain web pages, which are updated when the browser is in the online state, either by checking that the local copies are up-to-date at regular intervals or by checking that the local copies are up-to-date whenever the browser is switched to the online. One such web browser is [[Internet Explorer]]. When pages are added to the Favourites list, they can be marked to be "available for offline browsing". Internet Explorer will download local copies of both the marked page and, optionally, all of the pages that it links to. In Internet Explorer version 6, the level of direct and indirect links, the maximum amount of local disc space allowed to be consumed, and the schedule on which local copies are checked to see whether they are up-to-date, are configurable for each individual Favourites entry.<ref>{{cite book|title=Good Web Guide|author=Arabella Dymoke|year=2004|publisher=The Good Web Guide Ltd|isbn=1-903282-46-2|pages=17|chapter=an a to z of internet terms}}</ref><ref>{{cite book|title=The Complete Idiot's Guide to Wireless Computing and Networking|author=Paul Heltzel|chapter=Wireless Road Tricks|year=2002|publisher=Alpha Books|isbn=0-02-864287-2|pages=205}}</ref><ref>{{cite book|title=The Internet Companion: The Easy Australian Guide|author1=Glen Waller  |author2=Vanessa Waller |name-list-style=amp |year=2000|publisher=UNSW Press|isbn=0-86840-499-3|pages=110&ndash;112}}</ref><ref>{{cite book|title=Configuring and Troubleshooting Windows XP Professional|author=Brian Barber|year=2001|publisher=Syngress Publishing|isbn=1-928994-80-6|pages=[https://archive.org/details/isbn_9781928994800/page/285 285&ndash;389]|chapter=Configuring Internet Technologies|url=https://archive.org/details/isbn_9781928994800/page/285}}</ref>

For communities that lack adequate Internet connectivity—such as developing countries, rural areas, and prisons—offline information stores such as WiderNet's [[eGranary]] Digital Library (a collection of approximately thirty million educational resources from more than two thousand web sites and hundreds of CD-ROMs) provide offline access to information.<ref>{{Cite web|url=https://er.educause.edu/articles/2012/10/the-egranary-digital-library|title=The eGranary Digital Library|website=er.educause.edu|language=en|access-date=2020-01-08}}</ref>  More recently, the [[Internet Archive]] announced an offline server project intended to provide access to material on inexpensive servers that can be updated using USB sticks and SD cards.<ref>{{Cite web|url=https://archive.org/about/offline-archive/|title=Internet Archive: Offline Archive|website=archive.org|access-date=2020-01-08}}</ref>