The following documentation is transcluded from Template:Spoiler-header/doc:

This template is intended for use at the top of an article containing a large number of potential spoilers.

The basic use of the template is as follows:

{{spoiler-header}}

which shows:

Warning! This page contains information regarding new Star Trek material, and thus may contain spoilers.

To change the "a new product" wording, use the template as follows:

{{spoiler-header|the story of this novel}}

which produces:

Warning! This page contains information regarding the story of this novel, and thus may contain spoilers.

See also

• {{spoiler}}
• {{spoiler-section}}