字串的第一个字元必须是字母字元。
The first character of the string must be an alphabetic character.
MBCS字元可以出现在字串里，例如档案或目录名称。
MBCS characters can appear in strings such as file and directory names.
将指定起始位置和结束位置之间的可编辑字元范围取代成指定字串，然后输出移除位置和描述性资讯。
Replaces a range of editable characters between the specified starting and ending positions with the specified string, and then outputs the removal position and descriptive information.
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