The following group codes apply to ordinate dimensions. 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.
Ordinate dimension group codes 


Group code 
Description 
100 
Subclass marker (AcDbOrdinateDimension) 
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) 
The point (13,23,33) specifies the feature location and the point (14,24,34) specifies the leader endpoint. The point (11,21,31) specifies the midpoint of the dimension text. Point (10,20,30) is placed at the origin of the UCS that is current when the dimension is created.