Its string and text support features make it an exceptional platform for writing text-processing programs.
它的字符串和文本支持功能使它成为编写文本处理程序的最适合平台。
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。
To see if the string ing is present in the file text, use the index function, which returns the location of the first occurrence of ing so that you can use it for further string processing.
若要查看字符串ing是否出现在文件文本中，请使用index函数，该函数返回ing首次出现的位置，这样您就可以使用它来进行进一步的字符串处理。
To see if the string ing is present in the file text, use the index function, which returns the location of the first occurrence of ing so that you can use it for further string processing.
若要查看字符串ing是否出现在文件文本中，请使用index函数，该函数返回ing首次出现的位置，这样您就可以使用它来进行进一步的字符串处理。
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