Template:Must be substituted

This one doesn't need to be subst'd, just the pages it's on.
 * Only use this for templates that must be substituted because they have a purpose and/or syntax that require them to be. For templates that should be substituted, use should be substituted.
 * Don't forget to enclose this in tags. (Usually placed above the template itself.)
 * This template lowercases the template name by default; to override this, use.