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vsdump

VSDUMP(1)						      General Commands Manual							 VSDUMP(1)

NAME

       vsdump - VSD/VSS file format reverse engineering

SYNOPSIS

       vsdump [SUBOPTIONS] FILE

DESCRIPTION

       This manual page documents briefly the vsdump command.

       vsdump  is  an ALT Linux (www.altlinux.ru) project of VSD/VSS file format reverse engineering.  VSD/VSS is an OLE file. Main data is stored
       in 'VisioDocument' file inside this OLE. 'VisioDocument' file has a header with version number and pointer to  the  1st	stream.   Pointers
       contain Type, Offset to the start, Length, and Format of stream.  The Format field has a 'compressed' flag (the 2nd least significant bit).

       Format == 0x4* is used for streams that contains some strings.
       Format == 0x5* is used for streams that contains some pointers.
       Format == 0xd* is used for streams made of chunks.

       Type == 15 is used for streams that contains 'Page' data.
       Type == 23 is used for streams that contains Icons.
       And so on.

       To (de)compress some streams Visio uses some version of LZW algorithmwith options different from other MS-Office applications.

       Those  streams  are  made  of  chunks.  Chunks starts with header that contains Type and Length fields. Most of chunk types has a mandatory
       fields and some of them has a discretionary fields. The type of chunk imply an order and format of mandatory fields and place of start  for
       discretionary fields (if any).

       The discrepionary fields made of 'blocks'. Blocks start with length, type fields and index of variable it is linked to.
       Blocks  made of 'slices'. Every slice can be single byte operation like "+" or "*" or 'command' to put one/two bytes data or IEEE-754 frac-
       tion or stringor name or function into formula.

SUBOPTIONS

       A summary of options is included below.

       help
	      list subcommands

       dump <file> [directory]
	      dump pointers and inflated streams

       test <file>
	      test command table

AUTHOR

       vsdump was written by Valek Filippov (frob@df.ru)

       This manual page was written by Juan Angulo Moreno <juan@apuntale.com>, for the Debian project (but may be used by others).

								   jun 26, 2007 							 VSDUMP(1)