Introduction.

This is a collection of group code that can appear in all DXF ENTITIES entity,
for convenience have been collected in a single list.

Table: Common Entity Group Codes.

Group codeDescriptionif omitted,
defaults to
Version
introduction
Modified in
-1Application only: entity name (changes each time you open the drawing)Not omittedDXF R13Never
0Entity typeNot omittedDXF R10Never
5HandleNot omittedDXF R10Never
102Start point for application "{application_name".
See the tables below for examples.
no defaultDXF R14Never
application
dependent
After the start point until end point depends on the application.
See the tables below for examples.
no defaultDXF R14Never
102End point, "}"no defaultDXF R14Never
330Soft-pointer ID / handle BLOCK_RECORD placed in the TABLES sectionNot omittedDXF R15/2000Never
100Generic subclass marker for entities (AcDbEntity).
Each entity has another specific subclass marker.
Not omittedDXF R13Never
67If absent or 0, the entity is in model space.
Else if 1 the entity is in paper space.
All other values are actually unused (optional)
0DXF R13Never
410Application only: layout tab nameNot omittedDXF R15/2000Never
8Layer nameNot omittedDXF R10Never
6Linetype name (if isn't BYLAYER)
BYBLOCK is a floating linetype (optional)
BYLAYERDXF R10Never
38Elevation (if nonzero). Removed since DXF R120DXF R10Removed
347Hard-pointer ID/handle to material object (if isn't BYLAYER)BYLAYERDXF 2007Never
62Color number (if isn't BYLAYER)
0 is the BYBLOCK color.
256 is the BYLAYER color (optional)
BYLAYERDXF R10Never
370Lineweight enumeration value
Is a 16-bit integer
Not omittedDXF 2002Never
48Linetype scale (optional)1.0DXF R13Never
60Visibility: 0 = visible or 1 = invisible (optional)0DXF R13Never
92The number of bytes in the picture (and subsequent binary chunk records) (optional)no defaultDXF R15/2000Never
310Preview image (can be multiple lines, each line must have a maximum of 256 characters) (optional)no defaultDXF R15/2000Never
420A 24-bit color values from 0 (highest) to 255 (bottom)
The lowest byte is the value of blue, the byte middle is the green value, and the third byte is the red value
no defaultDXF 2004Never
430Color nameno defaultDXF 2004Never
440Transparency valueno defaultDXF 2004Never
390Hard pointer ID/handle to the plot style objectno defaultDXF 2007Never
284Shadow modeno defaultDXF 2007Never





Table: Attached (persistent reactors).

Group codeDescriptionVersion
introduction
102"{ACAD_REACTORS" indicates the start pointDXF R14
330Soft pointer ID/handle to owner dictionaryDXF R14
102End point, "}"DXF R14





Table: Attached (extension dictionary).

Group codeDescriptionVersion
introduction
102"{ACAD_XDICTIONARY" indicates the start pointDXF R14
360Hard owner ID/handle to owner dictionaryDXF R14
102End point, "}"DXF R14