The following group codes apply to ray entities. In addition to the group codes described here, see Common Group Codes for Entities. For information about abbreviations and formatting used in this table, see Formatting Conventions in This Reference.
Ray group codes
Group code
Description
100
Subclass marker (AcDbRay)
10
Start point (in WCS)
DXF: X value; APP: 3D point
20, 30
DXF: Y and Z values of start point (in WCS)
11
Unit direction vector (in WCS)
DXF: X value; APP: 3D vector
21, 31
DXF: Y and Z values of unit direction vector (in WCS)
