The page history shows the order in which changes were made to a Wiki article 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.
Whether you are an admin or a regular user, it is useful to keep track of what changes are occurring on the Wiki. Tracking changes allows you to view all new edits that have been done on a wiki. Tracking changes is also useful for noticing and reporting instances of vandalism on a Wiki.
How to track changes
The easiest and most interesting way of tracking changes is through the special page, Recent Changes. This page displays all edits, file uploads, page moves, deletions and other actions done in the wiki. The menu at the top offers a collection of links to customize your display: limit the number of changes or the number of days shown or restrict the display to show edits to a certain namespace only. You can also hide edits marked as minor (but don't forget that a change can be major even though the user flagged it as minor).
One line in the Recent Changes page consists of several links:
“diff” displays the difference from the previous revision of the page “hist” links to the revision history of the page the full title of the page links to the current version. If the page is on your watchlist, the title appears in bold.
Next is a flag describing the page modification type:
“N” denotes a new page “m” denotes a minor edit “b” denotes an edit made by a bot
Following the timestamp, the page size difference from the previous revision appears. Then the user is mentioned, with a link to either their user page and their talk page and contributions or (in the case of anonymous users) to their talk page only.
If the user submitted a summary when they made the edit, the summary appears in italics as the last link in the line.