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\begin{diagram}{Procedure declaration}{proceduredeclaration}
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\synt{procedure\ declaration}
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\synt{procedure\ header} \lit* ;
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\synt{subroutine\ block} \lit *;
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\synt{procedure\ header}
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\synt{qualified\ method\ identifier}
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\synt{formal\ parameter\ list}
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\begin{stack}\\ \synt{modifiers} \end{stack}
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\synt{subroutine\ block}
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\synt{external\ directive}\\