AcRxObject AcGiDrawable AcHeapOperators AcDbObject AcDbEntity AcDbCurve AcDbXline
class AcDbXline : public AcDbCurve;
dbxline.h
The AcDbXline class represents the XLINE entity type within AutoCAD. An xline entity is a line that extends to infinity in both directions.
AcDbEntity, AcDbObject, AcGePoint3d, AcGeVector3d