Chapter 6 -- ENTITIES Section
LEADER

The following group codes apply to leader 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."

Leader group codes
Group codes Description

100

Subclass marker (AcDbLeader)

3

Dimension style name

71

Arrowhead flag: 0 = Disabled; 1 = Enabled

72

Leader path type: 0 = Straight line segments; 1 = Spline

73

Leader creation flag (default = 3):
0 = Leader created with text annotation
1 = Created with tolerance annotation
2 = Created with block reference annotation
3 = Created without any annotation

74

Hook line direction flag:
0 = Hook line (or end of tangent for a splined leader) is the opposite direction from the horizontal vector.
1 = Hook line (or end of tangent for a splined leader) is the same direction as horizontal vector (see code 75).

75

Hook line flag: 0 = No hookline; 1 = Has a hookline

40

Text annotation height

41

Text annotation width

76

Number of vertices in leader (ignored for OPEN)

10

Vertex coordinates (one entry for each vertex)
DXF: X value; APP: 3D point

20, 30

DXF: Y and Z values of vertex coordinates

77

Color to use if leader's DIMCLRD = BYBLOCK

340

Hard reference to associated annotation (mtext, tolerance, or insert entity)

210

Normal vector
DXF: X value; APP: 3D vector

220, 230

DXF: Y and Z values of normal vector

211

"Horizontal" direction for leader
DXF: X value; APP: 3D vector

221, 231

DXF: Y and Z values of "horizontal" direction for leader

212

Offset of last leader vertex from block reference insertion point
DXF: X value; APP: 3D vector

222, 232

DXF: Y and Z values of offset

213

Offset of last leader vertex from annotation placement point
DXF: X value; APP: 3D vector

223, 233

DXF: Y and Z values of offset

Xdata belonging to the application ID "ACAD" follows a leader entitity if  any dimension overrides that have been applied to this entity. See "Dimension Style Overrides."