Chapter 6  ENTITIES Section
DIMENSION 
Linear and Rotated Dimension Group Codes

The following group codes apply to linear and rotated dimensions (note that linear and rotated dimensions are part of the AcDbAlignedDimension subclass). In addition to the group codes described here, those listed in "Common Group Codes for Entities" and "Common Dimension Group Codes" can also be present. For information about abbreviations and formatting used in this table, see "Formatting Conventions in This Reference."
Linear and rotated dimension group codesGroup codes  Description 
100 
Subclass marker (AcDbAlignedDimension) 
12 
Insertion point for clones of a dimensionBaseline and Continue (in OCS) 
22, 32 
DXF: Y and Z values of insertion point for clones of a dimensionBaseline and Continue (in OCS) 
13 
Definition point for linear and angular dimensions (in WCS) 
23, 33 
DXF: Y and Z values of definition point for linear and angular dimensions (in WCS) 
14 
Definition point for linear and angular dimensions (in WCS) 
24, 34 
DXF: Y and Z values of definition point for linear and angular dimensions (in WCS) 
50 
Angle of rotated, horizontal, or vertical dimensions 
52 
Linear dimension types with an oblique angle have an optional group code 52. When added to the rotation angle of the linear dimension (group code 50), it gives the angle of the extension lines. 
100 
Subclass marker (AcDbRotatedDimension) 