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Indexes
Strings, arrays, array properties, and pointers to strings or arrays can be indexed. For example, if FileName is a string variable, the expression FileName[3] returns the third character in the string denoted by FileName, while FileName[I + 1] returns the character immediately after the one indexed by I. For information about strings, see String types. For information about arrays and array properties, see Arrays and Array properties.
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索引
串、数组、数组属性、串指针、数组等能够被索引。例如，如果FileName是一个串变量，那么表达式FileName[3]返回用FileName表示的串的第3个字符，而FileName[I + 1]返回由I索引的字符之后的字符。有关串的信息，见串类型；有关数组和数组属性的信息，见数组和数组属性。