除了一个监听器将输入字符串转换成大写字母之外，监听器的代码完全相同。
With the exception that one of the listeners converts the input string to uppercase, the code for the listeners is exactly the same.
输入用户标识：Mickey(确保您使用正确的大小写并且没有用大写字母)。
Enter the user ID: Mickey (make sure you use the correct case and do not capitalize).
例外情况，一个监听器将输入字符串转换成大写字母，而另一个将其转换成小写字母，这对于监听器所编写的代码都是完全相同的。
With the exception that one of the listeners converts the input string to uppercase, while the second converts the string to lowercase, the code for the listeners is exactly the same.
此外，还可以输入您想要选择的选项的名称的首位大写字母，这是一种快捷方式。
Or you can type the shortcut letter in uppercase for the name of the option that you want to select.
行01到05对输入进行规范化，把输入变成大写字母，去掉其他字符。
Lines 01 to 05 normalize the input to capital letters and drop all other characters.
输入的数据全部由大写字母构成，所有字典单词和短语都最多包含20个字母。
The entire file will be in upper case, and no dictionary word or phrase will contain more than 20 letters.
输入的数据全部由大写字母构成，所有字典单词和短语都最多包含20个字母。
The entire file will be in upper case, and no dictionary word or phrase will contain more than 20 letters.
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