Message Binary Project (MSBP)

MSBP (Message Studio Binary Project) is a file format that stores relevant metadata for MSBT files.

Type	Description
CLR1	Colors
CLB1	Color labels
ATI2	Attributes
ALB1	Attribute labels
ALI2	Attribute lists
TGG2	Tag groups
TAG2	Tags definitions
TGP2	Tag parameters
TGL2	Tag string list
SYL3	Styles
SLB1	Style labels
CTI1	Source files

Some sections may be omitted.

CLR1

CLR1 holds color definitions. These may be looked my by label through CLB1 or by their index.

Offset	Type	Description
0x0	u32	Color count
0x4	RGBA	Colors

ATI2

ATI2 defines the structure of attributes for the ATR1 section.

Offset	Type	Description
0x0	u32	Attribute count
0x4	Attributes [attributeCount]	The attribute definitions

Attribute

Offset	Type	Description
0x0	Attribute Type	The attribute type
0x1	padding [1]	-
0x2	u16	Start index into the list in ALI2 (only valid for LIST type)
0x4	u32	Offset in attribute container

In MSBT files, string attributes are stored as u32 pointer.

ALI2

Offset	Type	Description
0x0	u32	List count
0x4	u32 [listCount]	Offsets to attribute lists
	Attribute Lists	Attribute list definitions

The section is always padded until it has a multiple of 4 bytes.

Attribute List

Offset	Type	Description
0x0	u32	Item Count
0x4	u32 [itemCount]	Offsets to list item names
	string [itemCount]	Null-terminated list item strings

TGG2

TGG2 defines tag groups for MSBT files.

Offset	Type	Description
0x0	u16	Group count
0x2	padding [2]	-
0x4	u32 [groupCount]	Offsets to tag groups
	Tag Group [groupCount]	Tag groups

Tag Group

Tag groups act as the main container for tags. All group definitions are padded to a multiple of 4.

Version 3 MSBP:

Offset	Type	Description
0x0	u16	Tag count
0x2	u16 [tagCount]	Tag indices (located in the TAG2 block)
	string	Null-terminated group name

Version 4 MSBP:

Offset	Type	Description
0x0	u16	Group ID
0x2	u16	Tag count
0x4	u16 [tagCount]	Tag indices (located in the TAG2 block)
	string	Null-terminated group name

TAG2 Block

TAG2 holds control tag definitions. All definitions are padded to a multiple of 4.

Offset	Type	Description
0x0	u16	Tag count
0x2	padding [2]	-
0x4	u32 [tagCount]	Offsets to each tag definition

Tag Definition

Offset	Type	Description
0x0	u16	Parameter count
0x2	u16 [parameterCount]	Tag parameter indices in the TGP2 section
-	-	Null-terminated tag name

TGP2

TGP2 holds tag parameter definitions. All definitions are padded to a multiple of 4.

Offset	Type	Description
0x0	u16	Parameter count
0x2	padding [2]	-
0x4	u32 [parameterCount]	Offsets to parameters

Tag Parameter

Offset	Type	Description
0x0	u8	Parameter type

In MSBT files, parameters which are strings will be length prefixed.

If type is not LIST

Offset	Type	Description
0x1	string	Null-terminated Parameter name

If type is LIST

Offset	Type	Description
0x1	padding [1]	-
0x2	u16	String count
0x4	u16 [stringCount]	String indices in the TGL2 section
	string	Null-terminated Parameter name

TGL2

TGP2 stores strings for all LIST datatype parameters in TGP2.

Offset	Type	Description
0x0	u16	String count
0x2	u16	Padding
0x4	u32 [stringCount]	Offsets to start of list
		Null-terminated strings

SYL3

SYL3 stores style data. These may be looked my by label through SLB1 or by their index.

Offset	Type	Description
0x0	u32	Style Count
0x4	Style [styleCount]	Styles

Style

Offset	Type	Description
0x0	u32	Region width
0x4	u32	Line number
0x8	u32	Font index
0xC	u32	Color index into CLB1

CTI1

CTI1 defines source files made with the project.

Offset	Type	Description
0x0	u32	File count
0x4	u32 [fileCount]	Offsets to file strings
		Null terminated File strings

Binary to Source naming scheme:

Binary Format	Source Format
.msbt	.mstxt
.msbt	.msproj
.msbt	.msflow

Datatype

Attributes and Tag Parameters store values based on a datatype. The enum is as follows:

Value	Datatype
0x0	u8
0x1	u16
0x2	u32
0x3	s8
0x4	s16
0x5	s32
0x6	f32
0x7	Unknown
0x8	string
0x9	known as list functionally equal to enum