Chapter 7 -- OBJECTS Section
LAYOUT

The following group codes are used by LAYOUT objects. In addition to the group codes described here, see "Common Group Codes for Objects." For information about abbreviations and formatting used in this table, see "Formatting Conventions in This Reference."

LAYOUT group codes
Group codes Description

0

Object name (LAYOUT)

5

Handle

102

Start of persistent reactors group; always "{ACAD_REACTORS"

330

Soft-pointer ID/handle to owner dictionary

102

End of persistent reactors group, always "}"

330

Soft-pointer ID/handle to owner object

100

Subclass marker (AcDbPlotSettings)

Plotsettings object
group codes

For group codes and descriptions following the AcDbPlotSettings marker, see "PLOTSETTINGS"

100

Subclass marker (AcDbLayout)

1

Layout name

70

Flag (bit coded) to control the following:
1 = Indicates the PSLTSCALE value for this layout when this layout is current.
2 = Indicates the LIMCHECK value for this layout when this layout is current

71

Tab order. This number is an ordinal indicating this layout's ordering in the tab control that is attached to the AutoCAD drawing frame window. Note that the "Model" tab always appears as the first tab regardless of its tab order.

10

Minimum limits for this layout (defined by LIMMIN while this layout is current)
DXF: X value; APP: 2D point

20

DXF: Y value of minimum limits

11

Maximum limits for this layout (defined by LIMMAX while this layout is current):
DXF: X value; APP: 2D point

21

DXF: Y value of maximum limits

12

Insertion base point for this layout (defined by INSBASE while this layout is current):
DXF: X value; APP: 3D point

22, 32

DXF: Y and Z values of the insertion base point

14

Minimum extents for this layout (defined by EXTMIN while this layout is current):
DXF: X value; APP: 3D point

24, 34

DXF: Y and Z values of the minimum extents

15

Maximum extents for this layout (defined by EXTMAX while this layout is current):
DXF: X value; APP: 3D point

25, 35

DXF: Y and Z values of the maximum extents

146

Elevation

13

UCS origin
DXF: X value; APP: 3D point

23, 33

DXF: Y and Z values of UCS origin

16

UCS X-axis
DXF: X value; APP: 3D vector

26, 36

DXF: Y and Z values of UCS X-axis

17

UCS Y-axis
DXF: X value; APP: 3D vector

27, 37

DXF: Y and Z values of UCS Y-axis

76

Orthographic type of UCS
0 = UCS is not orthographic;
1 = Top; 2 = Bottom;
3 = Front; 4 = Back;
5 = Left; 6 = Right

330

ID/handle to this layout's associated paper space block table record

331

ID/handle to the viewport that was last active in this layout when the layout was current

345

ID/handle of AcDbUCSTableRecord if UCS is a named UCS.  If not present, then UCS is unnamed.

346

ID/handle of AcDbUCSTableRecord of base UCS if UCS is orthographic (76 code is non-zero).  If not present and 76 code is non-zero, then base UCS is taken to be WORLD.