Unique means 'being the only one of its kind, without equal or like'. It is sometimes used with adverbs like very, more, rather, somewhat, or comparatively, which dilute its meaning to 'unusual' or 'exceptional'. Many people object to this, and it is best to avoid it, especially in formal writing.
The points of the star represent the first seven verses of the Koran. Red, black, white, and green became the pan-Arab colours. Effective date: 16 April 1928.