This is the {{dmbox}} or disambiguation footer message box meta-template.
It is used to build disambiguation boxes, such as {{Disambiguation}}.
This template works similarly to {{ambox}} and mostly uses the same parameters. The main differences are that this box uses the disambiguation style and only has two "type" settings.
true = Stops this template from categorizing. Useful for instance when only testing or demonstrating this template. Templates that use this template should forward nocat, so they too understand nocat. So always add this:
nocat = {{{nocat|}}}
image
No parameter = If no image parameter is given, the template uses the default disambig or setindex image, depending on the type parameter.
An image = Should be an image with usual wiki notation. 30px - 50px width are usually about right depending on the image height to width ratio. (But the message box can handle images of any size.) For example:
image = [[Image:Schooner.svg|30px]]
none = Means that no image is used.
imageright
No parameter = If no imageright parameter is given then no image is shown on the right side.
An image = Should be an image with usual wiki notation. 30px - 50px width are usually about right depending on the image height to width ratio. (But the message box can handle images of any size.) For example:
MediaWiki:Disambiguationspage – Should list all disambiguation message boxes, so that some automatic tools can know what pages are disambiguation pages. Now also has a separate list with all set index message boxes, so some tools can know what pages are set index articles.
{{Disambiguation}} – The generic disambiguation message box.