文法属性root指向根规则myroot。

The grammar attribute root points at the root rule myroot.

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使用根规则的元素，major和minor规则成了整个规则结构的一部分。

Using the element of the root rule, the major and minor rules become part of the overall rule structure.

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数组是用一系列foreach语句填充的，该语句挑出根规则、主规则以及主规则引用的规则。

The array is filled using a series of foreach statements that pick out the root rule, master rules, and the rules that the masters refer to.

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