OLE Compound File
The OLE Compound File (OLECF) is used in other file formats as its underlying container file. It allows data to be stored in multiple streams.
The OLECF is also known as:
- Compound Binary File (current name used by Microsoft)
- Compound Document File (name used by OpenOffice)
- OLE2 file
Because the OLECF by itself is just a container it does not use a mime type. A mime type assigned to an OLECF refers to its contents.
The OLECF has the following file signature: hexadecimal: d0 cf 11 e0 a1 b1 1a e1
The OLECF has no distinct footer.
The OLECF uses a FAT like file system to define blocks that are assigned to the stream using multiple allocation tables. It uses a directory structure to define the name of the streams.
The OLECF is used to store:
- Microsoft Office 97-2003 documents:
Microsoft Compound Document File Format (This is actually the OpenOffice specification)
Be warned this file contains at least one error: the directory entry name length is a size in bytes not in characters.