Template:Out of date
This will add pages to Category:Needs update.
Possible template arguments
Insert a date, specifying when the message was inserted into the page. (Will be displayed in a smaller font after the main message.) Can be anything like "July 2012" or "2012-11-10" (as long as people know what it means). Default is to show no date.
specifies the superordinate labeling of the page this template is included in. (The part where it says "...help improve the [article] by updating..." Default is "article", but could be "image" or "help page" or something.
denominate the context which the template message is referring to. E.g. the whole article or just a section of one. (Will be used in "This [article] 's accuracy may be...".) Default: "article", could be "section" or anything else that makes sense in that sentence.