0

Object name (SPATIAL_FILTER)

5

Handle

102

Start of persistent reactors group; always "{ACAD_REACTORS"

330

Soft-pointer ID/handle to owner dictionary (SPATIAL).  

102

End of persistent reactors group, always "}"

100

Subclass marker (AcDbFilter)

100

Subclass marker (AcDbSpatialFilter)

70

Number of points on the clip boundary.
2=Rectangular clip boundary (lower-left and upper-right)
greater than 2=Polyline clip boundary

10

Clip boundary definition point (in OCS) (always 2 or more) based on an xref scale of 1.
DXF: X value; APP: 2D point

20

DXF: Y value of boundary definition point (always 2 or more)

210

Normal to the plane containing the clip boundary.
DXF: X value; APP: 3D vector

220, 230

DXF: Y and Z values of extrusion direction

11

Origin used to define the local coordinate system of the clip boundary. DXF: X value; APP: 3D point

21, 31

Origin used to define the local coordinate system of the clip boundary. DXF: Y and Z values

71

Clip boundary display enabled flag.
0=disabled; 1=enabled

72

Front clipping plane flag. 0=no; 1=yes

40

Front clipping plane distance (if code 72 = 1)

73

Back clipping plane flag. 0=no; 1=yes

41

Back clipping plane distance (if code 73 = 1)

40

4x3 transformation matrix written out in column major order. This matrix is the inverse of the original block reference (insert entity) transformation. The original block reference transformation is the one that is applied to all entities in the block when the block reference is regenerated. (always 12 entries)

40

4x3 transformation matrix written out in column major order that transforms points into the coordinate system of the clip boundary.  (12 entries)