Perhaps the greatest strength in Rexx as a text processing language is its useful collection of built-in string manipulation functions.

或许，作为一门文本处理语言，Rexx的最强大之处在于它所具备的实用的内置字符串处理函数。

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That's one unstructured string for the entire document, but with all the new string functions available, you can perform additional processing as needed.

对于整个文档来说它是没有结构的字符串，但是利用新增加的字符串函数，我们可以根据需要执行进一步处理。

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