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TEXT 1 .

DEFINITIONS :

1 . ____________________ ____________________ : means the nature of the physical , health or environmental hazard .
2 . ____________________ ____________________ : means the division of criteria within each hazard class , specifying hazard severity .
3 . ____________________ ____________________ : means a graphical composition that includes a symbol plus other graphic elements , such as a border , background pattern or colour that is intended to convey specific information on the hazard concerned .
4 . ____________________ ____________________ : means a word that indicates the relative level of severity of hazards to alert the reader to a potential hazard ; the following two levels are distinguished :
( a ) ____________________ : means a signal word indicating the more severe hazard categories .
( b ) ____________________ : means a signal word indicating the less severe hazard categories .