A page history shows the order in which changes were made to a Wikipedia article or other page on Wiki ଓଡ଼ିଆ.
If you are looking for information about historical events or other things that happened in the real world, you are on the wrong page! To get help finding factual information about people, places, things, or events, leave a message at Wiki: Reference desk. To get help finding out how to use Wikipedia, leave a note at Wiki: Help desk. This help page is exclusively dedicated to learning how to use a special type of Wikipedia page, called a history page, that shows the usernames and dates associated with changing the words in each encyclopedia article. |
Every editable page on Wikipedia has an associated page history (sometimes called revision history or edit history), which is accessed by clicking the "View history" tab at the top of the page.
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. For example, the page history for this help page shows that it was first created on September 20, 2004, and that it had been changed more than 500 times during the next ten years.
On a history page:
Below is a detailed example of a page history using the default skin:
Edits are shown from newest to oldest. Each edit takes up one line which shows; time & date, the contributor's name or IP and the edit summary, as well as other diagnostic information. Let's look at some of the functions of this page:
Not shown in this example: some edits may be automatically tagged by the abuse filter (example: (Tag: references removed)); any tags applied appear after the edit summary. Tags cannot be added or removed manually, and are intended to help editors identify potential problem edits for examination; they do not prove that an edit is problematic.
It is possible to restore an old version of a page by following the link to that version, clicking "edit" and then saving. This should be done with caution, as it means that all changes made to the page since the time of that version will be lost.
In rare cases all or part of a page history entry may be shown in grey, struck out by a horizontal line. This indicates that information has been hidden from public view by an administrator or bureaucrat. See Revision deletion and Oversight for more on this.
The history page contains a link "Revision history search". This links to Wikiblame, a tool for searching the entire history of a given page.
Another useful tool is the Special:Export page, which is used to produce an XML file with the wikitext of the current and (optionally) all old versions of one or more specified pages, with date, time, user name, and edit summary. How the XML file is displayed depends on the browser (it can also be saved locally for later searching and analysis). For more information on this feature, see Help:Export.
The following may also be useful:
Some page histories (such as User talk:Jimbo Wales) are very long, so that paging back even 500 results at a time cannot practically reach a date from several years ago. It is possible to simply change the date (YYYYMMDD) in the URL in these cases ( http://en.wikipedia.org/w/index.php?title=User_talk:Jimbo_Wales&offset=20061215142129&action=history
, for example) to get a listing of results going back from that date.
A link to an Atom web feed for the history of a page is available from the lefthand Toolbox. This gives the diffs of the last 10 edits, each with a link to the ordinary, full diff page. Depending on the browser there may be possibilities such as sorting by author.
An RSS version of the feed can be obtained by assigning to "feed" (one of the ଛାଞ୍ଚ:Mlmw) the value "rss", i.e., by replacing "&feed=atom" with "&feed=rss" in the Atom feed link.
When a page is moved (renamed), the entire edit history of the article, before and after the move, is shown. The old title becomes a redirect and loses its edit history.
If instead of a move, the entire content was cut and pasted into a new substitute article, the page history gets spread across two articles. The histories can be merged in this case.
When two pages are merged, typically one becomes a redirect. In this case the revision history of the redirect is kept.
When a page is deleted, its revision history remains in the database and can be retrieved by an administrator, who can also undelete the page (see Wikipedia:Viewing and restoring deleted pages).
Administrators can also remove selected revisions from a page history, for example if they contain defamatory text. For details, see Selective deletion.
An "image" (in the broad sense of an uploaded file) can be edited, or, more generally, be replaced by a different image, by uploading a new image file with the same name. Again all versions are kept. The image history listing forms part of the image description page, which appears when clicking on the image. The image history consists of this and the old versions themselves.
Images which have been deleted from their source are not available (not to be confused with images removed from an article but not from their source), the only record available is the upload log, deletion log and possibly the "votes for deletion" archive. Neither the latest nor older versions are kept by the system, hence it is not possible to restore a deleted image without uploading it again.
It is sometimes useful to link to a specific version of an article - this is called a "permanent link". For example, one might have done a review of a Wikipedia article and want to indicate which particular version was reviewed.
A permanent link to the current version of an article is normally available from the sidebar, under Toolbox -> Permanent link. For other namespaces, or if the version to be linked to is not the current version, use the page's History tab to navigate to the specific version required. The URL here will be suitable for use to permanently reference this version, and can usually be obtained from the browser's location bar. See also URLs of Wikipedia pages.
However the permalink does not guarantee to display the coherent historical version of any page, except for very simple pages; this is because most pages include images, templates (transcluded text and images), or time-based variables (such as CURRENTTIME). All these elements are not retained using a "permanent link" and they will be rendered according to the current state of the image/template, or the current time, producing a different result than was rendered at the time the old version was saved. Only the main text of the article is retained correctly, that is, the wikitext that one sees when clicking Edit.
One way to retain a visual snapshot of the current version is to make a web mirror of it, that is to copy the HTML file of the page, together with the auxiliary files such as cascading style sheets or images. Other ways are described in Help:Downloading pages.
Wiki does not give legal advice.
However, those wishing to make use of historical versions of articles should be aware that some of the history may be problematic and not necessarily reliable.
Title 17 United States Code § 108 archive notice: page histories should be considered not-for-profit archival material. Although all contributions are supposed to be compatible with CC-By-SA, it is possible that a user has inserted something which is a violation of copyright, in which case the user had no right to release it as CC-By-SA. In these cases, Wikipedia does not have a general policy of always deleting all copyright problems from the history, particularly if the edit is made to an existing article rather than a new one, although such material will be removed from the current version of a page. In the event of a DMCA takedown notice, the Wiki Foundation may remove violating versions from the page history. In other cases, the version may be kept to allow proper tracking of authors and demonstrate compliance with all legal requirements. You are being given notice under Title 17 that you are responsible for complying with copyright laws in regards to archival material, and that not all versions in a page history are necessarily available under the CC-By-SA.
As noted at the end of each history revision, in the text at MediaWiki:history copyright, the page histories may contain material that is subject to copyright limitations. While we attempt to remove such material from the current version (see copyright problems) it is often kept in the history for research and author attribution purposes. As Wiki is a not-for-profit company, this is believed to be fair use.
See also Wikipedia talk:Copyright violations on history pages for further discussion of this point.
This article uses material from the Wikipedia ଓଡ଼ିଆ article ସହଯୋଗ:Page history, which is released under the Creative Commons Attribution-ShareAlike 3.0 license ("CC BY-SA 3.0"); additional terms may apply (view authors). ଦର୍ଶାଯାଇନଥିଲେ ସମସ୍ତ ବିଷୟବସ୍ତୁ CC BY-SA 4.0 ରେ ଉପଲବ୍ଧ । Images, videos and audio are available under their respective licenses.
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