Template:Preview warning/doc

Template:Preview warning emits a warning in preview. Modules should instead use the module interface  in Module:If preview.

Usage
The warning will appear at the top of the page in preview, no matter where it is placed. It will be prefaced by "Preview warning:" in bold. The template will emit an always-visible warning if no warning text is supplied.

Parameters

 * 1
 * The warning text you want to provide.