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.
Linear and rotated dimension group codes 


Group code 
Description 
100 
Subclass marker (AcDbAlignedDimension) 
12 
Insertion point for clones of a dimension—Baseline and Continue (in OCS) DXF: X value; APP: 3D point 
22, 32 
DXF: Y and Z values of insertion point for clones of a dimension—Baseline and Continue (in OCS) 
13 
Definition point for linear and angular dimensions (in WCS) DXF: X value; APP: 3D point 
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) DXF: X value; APP: 3D point 
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) 