AutoCAD® 2002 - Autodesk

on page 60. For information about abbreviations and formatting used in this
table, see “Formatting Conventions in This Reference” on page 6.
Common dimension group codes
Group codes
Description
100 Subclass marker (AcDbDimension)
2 Name of the block that contains the entities that make up the
dimension picture
10 Definition point (in WCS)
DXF: X value; APP: 3D point
20, 30 DXF: Y and Z values of definition point (in WCS)
11 Middle point of dimension text (in OCS)
DXF: X value; APP: 3D point
21, 31 DXF: Y and Z values of middle point of dimension text (in OCS)
70 Dimension type.
Values 0–6 are integer values that represent the dimension type. Values
32, 64, and 128 are bit values, which are added to the integer values
(value 32 is always set in R13 and later releases).
0 = Rotated, horizontal, or vertical; 1 = Aligned;
2 = Angular; 3 = Diameter; 4 = Radius;
5 = Angular 3 point; 6 = Ordinate;
32 = Indicates that the block reference (group code 2) is referenced by
this dimension only.
64 = Ordinate type. This is a bit value (bit 7) used only with integer
value 6. If set, ordinate is X-type; if not set, ordinate is Y-type.
128 = This is a bit value (bit 8) added to the other group 70 values if
the dimension text has been positioned at a user-defined location
rather than at the default location
71 Attachment point:
1 = Top left; 2 = Top center; 3 = Top right;
4 = Middle left; 5 = Middle center; 6 = Middle right;
7 = Bottom left; 8 = Bottom center; 9 = Bottom right
72 Dimension text line spacing style (optional):
1 (or missing) = At least (taller characters will override)
2 = Exact (taller characters will not override)
41 Dimension text line spacing factor (optional):
Percentage of default (3-on-5) line spacing to be applied. Valid values
range from 0.25 to 4.00
42 Actual measurement (optional; read-only value)
70 | Chapter 6 ENTITIES Section