Even if it appears unused, this templateTemplate:Valid Unused should not be deleted.
This may be because it is URL-linked only, not always in active use, or is in use in some other way.

Use this template to remove unused materials from the unused Special Pages. These pages are added to the valid unused category. It automatically changes namespace depending on where it is used. For example, files will show "Even if it appears unused, this file should not be deleted."

Example:

{{Valid Unused|Not always actively in use.}}

Even if it appears unused, this templateTemplate:Valid Unused should not be deleted.
This may be because it is URL-linked only, not always in active use, or is in use in some other way. Reason: Not always actively in use.