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2.1.3 Substream

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The workbook stream (section 2.1.7.20) contains substreams that specify global properties and data for a workbook and specify the sheets (1) that constitute the workbook. The beginning of each substream is marked by a BOF record (section 2.4.21) that has a dt field that specifies the type of the substream. The end of each substream is marked by an EOF record (section 2.4.103).

For more information about these substreams, see section 2.1.7.20 and subsections.