Wikipedia is unlike traditional publishers or media organizations, having no formal review process or with no formal approval process or publishing schedule. Anyone can click the edit button and make any change to almost any page at any time, but just the same, anyone can undo any change at any time. Getting edits to stick requires understanding Wikipedia's rules on content, sources, and formatting.
Veteran editors actively monitor the site for changes that violate guidelines, and automated tools—called "bots"—help revert vandalism or other problematic edits. Filters are also in place to catch inappropriate content, such as offensive language, soon after it appears.
While nearly all pages are modifiable, some have restrictions. Some Wikipedians, known as administrators (or admins), have special powers to lock pages and block disruptive users. "Edit-protected" pages limit changes by unregistered or new users, and a small number of pages may be fully locked, often due to persistent vandalism or "edit-warring". These protections are usually temporary and remain in place until disputes are resolved.
