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microsoft excel is a popular spreadsheet. it uses a file format called biff (binary 【相关文章:备份程序设置,重装系统不再烦】
microsoft excel file format 【扩展阅读:教您Windows操作系统的安全卸载】
file format). there are many types of biff records. each has a 4 byte header. the 【扩展信息:用好操作系统自带的系统“小工具”】 first two bytes are an opcode that specifies the record type. the second two bytes specify record length. header values are stored in byte-reversed form (less significant byte first). the rest of the record is the data itself (figure 2-1). figure 2-1. biff record header. | record header | record body byte number | 0 1 2 3 | 0 1 ... ----------------------------------- record contents | xx | xx | xx | xx | xx | xx | ... ----------------------------------- | opcode | length | data ... 下一页