Template:Valid unused image

[[Media:]]

MediaWiki provides resources such as Special:UnusedFiles to track images that aren't being used and thus can be deleted. Some images, such as the wiki's logo, appear unused by this metric but obviously should be kept. This template not only marks such images, but calls the image in a way that MediaWiki will see and so not list as unused.

Valid use cases include:
 * part of icon set that must remain complete
 * only appears in template that is not expected to be used most of the time
 * used by wiki skin (this is not detected by MediaWiki)