Template:Namespace detect
This template is used to produce different text depending on what namespace the rendered page is in. You may want a template to render one way in a Main: namespace page, another when viewing it directly in the Template: namespace, and still another in Help:.
{{Namespace detect
|main=Show this in main pages
|template=Use this in the template space
|help=And in the help space use this
|other=Anywhere else, this}}