Sheet File

Sheet File

Sheet files start with a Header Section which starts with the following codes:

Offset Size Data   Description

0000 ID 37 00 00 10  UID1: Header Section layout

0004 ID 6D 00 00 10  UID2: File kind

0008 ID 88 00 00 10  UID3: Application ID

000C L  A8 15 08 55  UID4: Checksum of UID1,2 and 3

0010

The Section Table Section may contain the following sections, usual in the given order:

Identifier  Section          Always found

CD 00 00 10  Offset of the Password Section   No

1F 01 00 10  Offset of the Sheet Status Section  Yes

05 01 00 10  Offset of the Page Layout Section   Yes

1D 01 00 10  Offset of Sheet Workbook Section    Yes

21 01 00 10  Offset of the Sheet Graph List Section Yes

89 00 00 10  Offset of the Application ID Section  Yes

The Password Section is only found in encrypted documents. At least the Sheet Graph List Section is encrypted if it is found.