Template:Template doc

&#91;|view&#93; &#91;[ edit]&#93; &#91;[ purge]&#93; Documentation for 

Usage

 * Place inside   tags on a template page to display template documentation.
 * Generally template documentation should only be used on complex templates with multiple parameters. The majority of templates won't need a separate documentation subpage.
 * If you want to have documentation displayed without a subpage, but with the green box, use.

Adpated from The Portal Unoffical Wiki