[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.