编码页面有唯一的编码计划，为图形和控制字符定义了一系列值。
The code pages have unique encoding schemes that define a range of values for the graphic and control characters.
本标准具体规定了图形字符的单字节编码和双字节编码，并对四字节编码体系结构做出了规定。
This standard specifies the graphic characters in the single-byte and double byte codes, as well as four-byte coding structure make provisions.
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