If the hazardous materials label will not fit on the packaging, how should it be labeled?

Shippers put diamond-shaped hazard warning labels on most HazMat packages. These labels inform others of the hazard. If the diamond label will not fit on the package, shippers may put the label on a tag securely attached to the package. For example, compressed gas cylinders that will not hold a label will have tags or decals. [Commercial Driver Handbook]