Special registers are reserved words that name storage areas generated by the compiler.
专用寄存器是一些保留字，用于指定编译器生成的存储区域。
You should avoid these keywords—or what are known as bash shell reserved words—when choosing names for shell variables.
在为shell变量选择名称时，应该避免使用这些关键词（也称为bash shell保留字）。
There are three classes of reserved words.
总共有三类保留字。
This includes all the delimiters, reserved words and keywords.
这包括所有的分界符，保留字以及关键字。
Using new reserved words as identifiers can cause confusion and should be avoided.
使用新增保留字做为识别项容易导致混淆，应该避免。
The following identifiers are used as reserved words, or keywords of the language, and cannot be used as ordinary identifiers. They must be spelled exactly as written here.
以下标识符用作保留字，或者叫做语言的关键字，并且不能作为普通标识符使用，而且它们必须像下面的那样严格拼写。
The following identifiers are used as reserved words, or keywords of the language, and cannot be used as ordinary identifiers. They must be spelled exactly as written here.
以下标识符用作保留字，或者叫做语言的关键字，并且不能作为普通标识符使用，而且它们必须像下面的那样严格拼写。
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