[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.