supplies attributes for the elements which define component parts of a content model. supplies an XPath identifying a context within which this component of a content model must be found minimum number of occurences 빈도의 최소 수 出現次數最小值 nombre minimum d'occurrences numero minimo di occorrenze número mínimo de apariciones indicates the smallest number of times this component may occur. 1 maximum number of occurences 빈도의 최대 수 出現次數最大值 nombre maximum d'occurrences. numero minimo di occorrenze número máximo de apariciones. indicates the largest number of times this component may occur. unbounded 1