Hexadecimal notation such as 0x20to specify a space character.
使用诸如0x20等十六进制符号来指定空格字符。
Byte01 represents the fact that field 4 and field 7 exist, which means that Byte01 takes a value in Binary notation of 00010010, which is the hexadecimal value of x12.
Byte01表示字段4和字段7存在，这意味着Byte01表示一个二进制的值00010010，其十六进制值为x12。
The character is specified as one or two UTF-16 code units in hexadecimal notation.
这个字符指定为十六进制形式的一个或两个UTF - 16编码单元。
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