The term 'Sign of Virtue' is a reference to the HALO, which is a symbol of holiness and divine grace in many religions. The HALO is typically depicted as a circle of light around the head of a holy figure, such as an angel or saint. It is also used to represent the spiritual power of a person or object. In Christianity, the HALO is often associated with Jesus Christ and other saints. In Hinduism, it is associated with deities such as Vishnu and Shiva. In Buddhism, it is associated with the Buddha and other enlightened beings. In all cases, the HALO is seen as a sign of virtue and holiness.